The MOVE Bombing: The Day Philadelphia Dropped a Bomb on Its Own Block.

What happened on May 13, 1985, in a paragraph.

The MOVE organization was a Philadelphia-based Black liberation and naturalist religious community founded in 1972 by Vincent Leaphart, who took the name John Africa and required adherents to take the same surname. By the spring of 1985, a faction of MOVE had occupied a row house at 6221 Osage Avenue in the Cobbs Creek section of West Philadelphia for several years, where the organization's lifestyle — communal living, raw food, no household plumbing, and amplified loudspeaker broadcasts of MOVE political doctrine at all hours — had produced sustained complaints from neighbors and from the city's African-American mayor, W. Wilson Goode Sr., the city's first Black mayor. On May 12, 1985, the Philadelphia Police Department evacuated the surrounding blocks in preparation for serving arrest warrants on four MOVE members for offenses including parole violations and weapons charges. After hours of failed negotiation, the siege escalated on the morning of May 13 into an exchange of fire involving more than 10,000 rounds discharged by police, tear-gas insertion, and forced-entry attempts. At approximately 5:27 p.m., on Police Commissioner Gregore J. Sambor's authorization and with Mayor Goode's approval, a Pennsylvania State Police helicopter circled the row and Lieutenant Frank Powell dropped a satchel containing approximately 4 pounds of Tovex water-gel explosive together with a smaller quantity of military C-4 onto the rooftop bunker MOVE had constructed. The explosion ignited a fire on the roof and in the row of attached homes. Fire Commissioner William C. Richmond, on consultation with Sambor and apparently with Goode's awareness, made the decision to let the fire burn. By the time the Fire Department engaged the blaze, the fire had spread to consume 61 attached row homes on Osage Avenue and four homes on adjacent Pine Street. Eleven people inside the MOVE house were killed: John Africa himself; five other adults (Frank Africa, Theresa Africa, Conrad Africa, Rhonda Africa, Raymond Africa); and five children — Tomaso Africa (age 9), Phil Africa (11), Little Phil Africa (12), Delisha Africa (12), and Tree Africa (14). Two people inside survived: Ramona Africa, an adult who emerged through the rear of the house with severe burns, and Michael Ward (then known as Birdie Africa), a thirteen-year-old child. The 1986 Philadelphia Special Investigation Commission Report, chaired by William H. Brown III, found city officials "grossly negligent" and the decision to allow the fire to burn "unconscionable." No criminal charges were ever filed. The federal civil rights lawsuit brought by Ramona Africa and by the families of John Africa and Frank Africa settled in June 1996 for $1.5 million. The Philadelphia City Council adopted a formal resolution apologizing for the bombing on November 12, 2020 — thirty-five years after the event. In 2021, the University of Pennsylvania Museum of Archaeology and Anthropology disclosed that bone fragments of two of the murdered children had remained in its collections, unrepatriated, for thirty-six years; the remains were returned to MOVE family members in subsequent months.

The documented record.

Who MOVE was

MOVE was founded in 1972 by Vincent Leaphart (1931–1985), a Korean War veteran from West Philadelphia who took the name John Africa and developed a doctrine combining Black liberation politics, opposition to industrial technology, raw-food vegetarianism, and a naturalist religious framing that he set out in a manuscript he called The Guidelines. Verified Adherents took the surname Africa and rejected what John Africa called "the system." MOVE membership through the 1970s and into the 1980s never exceeded approximately 50 adults at peak; at the time of the 1985 confrontation it was smaller. The organization's communal house at 6221 Osage Avenue was occupied by a faction that included children born to MOVE adults and raised within the organization's framework [1][2].

The 1978 confrontation as background

The 1985 bombing was the second armed confrontation between the Philadelphia Police Department and MOVE. Verified On August 8, 1978, at MOVE's then-residence at 309 North 33rd Street in the city's Powelton Village section, an attempted eviction operation devolved into a gunfight in which Philadelphia Police Officer James J. Ramp was killed by gunfire whose precise origin (MOVE or crossfire) remained contested. Nine MOVE members — the "MOVE 9" — were convicted of third-degree murder in Ramp's death and given sentences of 30 to 100 years. (The last of the MOVE 9, Delbert Africa, was released in 2020; one, Phil Africa, died in prison in 2015.) The 1978 confrontation produced enduring grievance on both sides; in the police department it produced an institutional resolve that the next confrontation with MOVE would not end the same way [1][3].

The escalation through 1984

By 1984 the MOVE house at 6221 Osage Avenue had become the locus of sustained complaint from neighboring residents, themselves predominantly Black middle-class homeowners. Verified The complaints centered on the organization's loudspeaker broadcasts of political and obscene language at all hours, on accumulating compost and refuse in the rear yard, on the perceived danger of weapons MOVE adults openly displayed, and on the children's evident health and educational deprivation. Mayor Goode — who took office in January 1984 as Philadelphia's first African-American mayor — faced sustained pressure from the Osage Avenue neighbors to act. Through late 1984 and into 1985, Goode's administration explored civil and criminal options. On May 7, 1985, a grand jury issued arrest warrants for four MOVE adults on charges including parole violations, contempt, terroristic threats, and unlawful possession of firearms [2][4].

The May 12 evacuation and the May 13 siege

On Sunday, May 12, 1985, Philadelphia Police evacuated approximately 500 residents from the immediately surrounding blocks. Verified At 5:35 a.m. on Monday, May 13, Police Commissioner Sambor announced through a bullhorn outside 6221 Osage that the occupants had fifteen minutes to surrender. No one emerged. At approximately 6:00 a.m., a tactical team began attempting to insert tear gas into the house. The MOVE adults inside — some armed, with the children sheltered in the basement — returned gunfire. Over the course of the morning and into the afternoon, Philadelphia Police discharged an estimated 10,000 rounds of ammunition into the house, including from automatic weapons. Fire-hose attempts to flood the house through the front and side walls failed because of the reinforced construction MOVE had installed [4][5].

The rooftop bunker

Atop the row house MOVE had constructed a wooden bunker rising approximately four feet above the roof, reinforced with railroad ties and similar timbers. Verified The bunker was the immediate operational concern that drove the decision to drop the explosive device: tactical-team commanders concluded that the bunker had to be removed to allow tear-gas insertion through the roof, that ground-level approach was impractical under fire, and that an aerial demolition was therefore necessary. The decision to develop the explosive device was made on the morning of May 13. The materials — Tovex water-gel explosive and a quantity of C-4 obtained from the FBI's Philadelphia office — were assembled by Philadelphia Police bomb-squad personnel under Lieutenant Frank Powell [4][5].

The drop at 5:27 p.m.

At approximately 5:27 p.m. on May 13, 1985, a Pennsylvania State Police helicopter piloted by Sergeant Donald Griffiths circled the 6200 block of Osage Avenue. Verified Lieutenant Powell, leaning from the open door of the helicopter, dropped a canvas satchel containing approximately 4 pounds of Tovex and a quantity (variously reported at 1 to 1.5 pounds) of C-4 onto the bunker on the roof of 6221 Osage. The satchel exploded on or near the roof. The Mayor's Office, the Police Commissioner, and the Fire Commissioner were aware of the operation in advance; Mayor Goode subsequently acknowledged that he had been informed and had not countermanded the order [2][4][6].

The decision to let the fire burn

The explosion ignited a fire on the roof of 6221 Osage that within minutes spread to the adjoining row houses. Verified The Philadelphia Fire Department, present on scene with engines and ladders, did not engage the fire. The MOVE Commission's subsequent finding was that Fire Commissioner Richmond, in consultation with Police Commissioner Sambor and apparently with the mayor's awareness, made an affirmative decision to allow the fire to burn — a decision the Commission described as "unconscionable." The intended tactical rationale, as reconstructed by the Commission, was that the burning structure would force any remaining MOVE members to surrender or to flee. The fire instead spread rapidly through the wood-frame attached row houses. By the time the Fire Department engaged the blaze, the fire had consumed 61 homes on Osage Avenue and 4 homes on Pine Street — 65 homes total — and approximately 250 residents were displaced [4][5][7].

The eleven dead

Eleven MOVE members died in the house. Verified Six adults: John Africa (Vincent Leaphart, b. 1931, the organization's founder); Frank James Africa; Theresa Brooks Africa; Conrad Hampton Africa; Rhonda Harris Ward Africa; and Raymond Foster Africa. Five children: Tomaso Africa, age 9; Phil Africa, age 11; Little Phil Africa, age 12; Delisha Africa, age 12; and Tree Africa, age 14. The children's bodies were recovered from the basement, where the adults had directed them in the hours of the siege. Autopsies conducted by the Philadelphia Medical Examiner's Office identified causes of death including burns, smoke inhalation, and in some cases gunshot wounds; the source of the gunshot wounds — whether from the prior exchange of fire from the police perimeter, from MOVE members inside, or from some combination — was contested by the Commission and has not been fully resolved [4][7][8].

The two survivors

Two MOVE members survived. Verified Ramona Johnson Africa, an adult, emerged through the rear of the house carrying Michael Ward (Birdie Africa), a thirteen-year-old child; both had severe burns. Ramona Africa was arrested at the scene and was subsequently charged with riot and conspiracy in connection with the day's events. She was convicted and served seven years in prison (1986–1992), declining a parole condition that required her to dissociate from MOVE. She has remained the principal public spokesperson for the MOVE organization in the decades since. Michael Ward was placed in protective custody, eventually reunited with his father (who was not a MOVE member), and lived to adulthood; he died on September 20, 2013 in an accidental drowning at age 41 [2][9].

The MOVE Commission

On May 22, 1985, Mayor Goode established the Philadelphia Special Investigation Commission — the MOVE Commission — chaired by William H. Brown III, a former chairman of the U.S. Equal Employment Opportunity Commission. Verified The Commission's 11 members included citizens, attorneys, and former officials. Over nine months the Commission conducted public hearings, received testimony from city officials including Goode, Sambor, and Richmond, and reviewed the police, fire, and dispatch records. Its 470-page Final Report was delivered on March 6, 1986. The Commission's central findings: that the decision to drop the explosive device on a residential structure occupied by children was "unconscionable" and was made "without adequate consideration of the consequences"; that the decision to allow the fire to burn was "unconscionable"; that the city officials directly responsible — the mayor, the police commissioner, the fire commissioner, the managing director, and the police tactical commanders — were "grossly negligent"; and that the decision-making structure of the city government during the May 12–13 operation had broken down to a degree the Commission characterized as institutional failure [7].

No criminal charges

The District Attorney of Philadelphia, Edward G. Rendell, convened a grand jury in 1988 to review the MOVE Commission's findings and the underlying record. Verified The grand jury declined to indict any city official. No state or federal criminal charges have ever been filed against any official responsible for the May 13 operation. Mayor Goode was re-elected in 1987 (defeating Frank Rizzo) and served until 1992. Sambor resigned as Police Commissioner in November 1985. Richmond retired from the Fire Department in 1988. Frank Powell, the officer who dropped the satchel, continued his career in the Philadelphia Police Department [2][7][10].

The 1996 federal civil rights settlement

Ramona Africa, and the families of John Africa and Frank Africa, brought a federal civil rights action against the City of Philadelphia, Goode, Sambor, Richmond, and Powell under 42 U.S.C. § 1983, alleging violations of constitutional rights including unreasonable force and unconstitutional taking. Verified The case was tried in 1996 in the U.S. District Court for the Eastern District of Pennsylvania before Judge Louis H. Pollak. The jury returned a verdict for the plaintiffs, awarding $1.5 million in damages, plus separate amounts to Ramona Africa for her own injuries. The City of Philadelphia did not appeal [11].

The November 12, 2020 City Council apology

On November 12, 2020 — thirty-five years after the bombing and in the aftermath of the summer of 2020 racial-justice protests — the Philadelphia City Council adopted Resolution 200351, formally apologizing for the bombing of MOVE. Verified The resolution, introduced by Councilmember Jamie Gauthier (whose district includes the Osage Avenue site), passed unanimously. The resolution explicitly named May 13 as an annual day of remembrance and characterized the city's actions on that date as "wrong" and "the city's responsibility." Mayor Jim Kenney issued a separate statement of apology the same day [12].

The Penn Museum and Princeton remains controversy

In April 2021, reporting by Maya Kassutto in Billy Penn and by Abdul-Aliy Muhammad in the Philadelphia Inquirer disclosed that bone fragments of two MOVE children killed in the 1985 bombing — identified as those of Tree Africa and Delisha Africa — had remained for thirty-six years in the collections of the University of Pennsylvania Museum of Archaeology and Anthropology, where they had been transferred for forensic identification work by anthropologists Alan Mann and Janet Monge. Verified The remains had subsequently been incorporated into Mann's research collection and used in teaching materials, including in a Princeton-hosted online forensic-anthropology course that featured the remains without family consent. The disclosure produced public outrage, the suspension of the relevant course, formal apologies from Penn and Princeton, and the eventual return of the remains to MOVE family members through Mike Africa Jr.'s coordination [13][14].

Mike Africa Jr.'s public account

Michael Africa Jr., the son of MOVE 9 members Debbie Sims Africa and Michael Davis Africa Sr., was born in prison in 1978 to Debbie Africa shortly after the Powelton Village confrontation. Verified He grew up outside MOVE custody after his mother's incarceration and reconnected with the organization in adulthood. From the 2010s onward, Mike Africa Jr. has been the most public voice of the next-generation MOVE community, leading the campaign for the release of the MOVE 9 (achieved in stages from 2018 through 2020), the campaign for the 2020 City Council apology, and the campaign for the return of the children's remains from the Penn Museum. His 2024 memoir On a Move: Philadelphia's Notorious Bombing and a Native Son's Lifelong Battle for Justice is the principal recent family-history account [15].

The institutional framing.

The position of the City of Philadelphia, articulated in Mayor Goode's contemporary statements and in his subsequent memoir, was that the May 12–13 operation was a tactical response to an armed confrontation with a group that had killed a police officer in 1978, that had resumed armed posture in 1985, and that had endangered the surrounding neighborhood through its rooftop fortifications and stockpiled weapons. Claimed In this framing, the decision to use the explosive device was a tactical judgment by police commanders to remove a fortified position; the decision to allow the fire to burn was a failure of tactical communication and an error rather than an act of indifference; the eleven deaths were the consequence of MOVE adults' refusal to send the children out during a daylong opportunity to do so. Mayor Goode publicly apologized for the operation as early as November 1985 and reiterated apologies in subsequent years; he has never accepted that the deaths were the responsibility of city officials acting with malice [6][16].

The position of the MOVE Commission and the subsequent civil litigation was different in emphasis. The Commission accepted that MOVE had presented a real challenge to the city but found that the city's response was disproportionate, was undertaken without adequate planning, and reflected a willingness to use lethal force against a residential structure occupied by children that no responsible public-safety calculus could justify. The federal civil rights jury in 1996 reached a similar conclusion as a matter of civil liability. Verified Whether the conduct rose to the level of criminal culpability is the question the 1988 grand jury declined to answer in the affirmative [7][11].

A separate strand of analysis, advanced by Ramona Africa and by sympathetic historians, has framed the bombing as a deliberate act of racialized political repression against a Black organization — one that the city's African-American leadership did not prevent and may have facilitated under pressure from the surrounding Black middle-class neighborhood and from federal-agency input. Claimed The role of the FBI's Philadelphia field office in supplying the C-4 component of the explosive device, documented in the Commission record, is a particular point of attention in this framing [4][9][17].

The unanswered questions.

The full chain of decision-making on the bomb authorization

The Commission established that Sambor authorized the drop and that Goode was informed in advance and did not countermand. Disputed What is less clear, even after the Commission's hearings, is the precise sequence of conversations between Sambor, Managing Director Leo Brooks, Mayor Goode, and the police tactical commanders during the hours preceding the 5:27 p.m. drop. Goode in subsequent testimony and in his memoir has characterized himself as having been more peripheral to the moment-by-moment decisions than the Commission record suggested. Sambor in subsequent statements has characterized himself as having operated under broader authorization than he was prepared to claim publicly. The hour-by-hour record does not fully resolve these competing accounts [4][6][7].

The source of the C-4

The C-4 component of the explosive device was, according to the Commission record, obtained from the Philadelphia office of the Federal Bureau of Investigation by Philadelphia Police bomb-squad personnel on the morning of May 13. Disputed The chain-of-custody documentation for the C-4 transfer has not been fully released; the FBI's institutional record of the transfer has not been the subject of a separate published investigation. Whether the transfer represented routine inter-agency cooperation or required senior-level authorization at the bureau remains incompletely documented in the public record [4][17].

The gunshot wounds on the recovered bodies

The autopsies conducted by the Philadelphia Medical Examiner's Office identified gunshot wounds on several of the recovered bodies in addition to the burn and smoke-inhalation findings. Disputed Whether those wounds were inflicted during the daylong police gunfire into the house, by MOVE members in the house, or in some other circumstance has not been definitively resolved. The Commission's treatment of the question was inconclusive; subsequent ballistic re-examination of the recovered rounds has produced limited additional clarity [4][7][8].

The complete inventory of the Penn Museum remains

The 2021 disclosure identified bone fragments of two MOVE children at the Penn Museum. Unverified Whether additional remains — from any of the eleven MOVE dead — remained in other institutional collections at any time has not been the subject of a complete published inventory. Penn's internal review, commissioned in 2021 under Tukufu Zuberi, produced findings that the museum has not yet released in full [13][14].

Why no criminal charges were ever filed

The 1988 grand jury under Rendell declined to indict any official. The grand jury record is sealed. Disputed The factors that led to the no-bill decision have been variously characterized as the difficulty of establishing criminal mens rea against officials acting under color of law, the absence of any single decision-maker on whom criminal liability could be focused, and the political sensitivities of a prosecution that would have crossed both racial and partisan lines. No published account has fully reconstructed the grand jury's deliberations [10][16].

Primary material.

The accessible primary record on the MOVE bombing is held at:

• The Philadelphia Special Investigation Commission (MOVE Commission) records at the Temple University Urban Archives, Philadelphia. The transcripts of the Commission's nine months of public hearings, the supporting exhibits, and the 470-page Final Report (March 6, 1986).
• The Philadelphia City Archives hold the Police Department incident records, Fire Department logs, and Managing Director's office files from May 12–13, 1985, partially released through subsequent Right-to-Know Law actions.
• The U.S. District Court for the Eastern District of Pennsylvania holds the case files for Africa et al. v. City of Philadelphia (1996), including the trial exhibits, jury verdict, and post-trial proceedings.
• The Philadelphia City Council archives hold the November 12, 2020 Resolution 200351 (the formal apology) and the supporting documentation.
• The University of Pennsylvania has, since the 2021 disclosure, maintained a public record of its institutional response to the children's-remains controversy, including the Zuberi review materials released in part.

Critical individual documents include: the May 7, 1985 grand jury arrest warrants for the four MOVE adults; the Police Department after-action report (May 1985); the MOVE Commission Final Report (March 6, 1986); the Philadelphia Medical Examiner's autopsy reports on the eleven dead; the 1996 federal civil rights verdict; the November 12, 2020 City Council resolution; and the 2021 Penn Museum and Princeton public statements.

The sequence.

1. 1972 Vincent Leaphart (John Africa) founds MOVE in West Philadelphia.
2. August 8, 1978 First armed confrontation at MOVE's Powelton Village house. Officer James Ramp killed. Nine MOVE adults (the MOVE 9) subsequently convicted.
3. Early 1980s MOVE relocates to 6221 Osage Avenue in West Philadelphia's Cobbs Creek section.
4. January 1984 W. Wilson Goode Sr. inaugurated as Philadelphia's first African-American mayor.
5. 1984–1985 Sustained neighbor complaints about MOVE's Osage Avenue operations.
6. May 7, 1985 Grand jury issues arrest warrants for four MOVE adults.
7. May 12, 1985 Philadelphia Police evacuate surrounding blocks; siege begins.
8. May 13, 1985 (early morning) Sambor announces surrender ultimatum; tear-gas insertion and exchange of gunfire begin.
9. May 13, 1985 (~5:27 p.m.) Pennsylvania State Police helicopter drops satchel with Tovex and C-4 on MOVE rooftop bunker. Fire ignites.
10. May 13, 1985 (evening) Fire allowed to burn; spreads to 65 row homes. Ramona Africa and Birdie Africa (Michael Ward) escape; eleven die inside.
11. May 14, 1985 Bodies recovered. Mayor Goode appears publicly accepting responsibility.
12. May 22, 1985 Philadelphia Special Investigation Commission established under William H. Brown III.
13. November 1985 Police Commissioner Sambor resigns.
14. March 6, 1986 MOVE Commission Final Report delivered: city officials found "grossly negligent," decisions "unconscionable."
15. 1986 Ramona Africa convicted of riot and conspiracy; sentenced to seven years.
16. 1988 Philadelphia grand jury under DA Edward Rendell declines to indict any city official.
17. June 1996 Federal civil rights jury in Africa v. City of Philadelphia awards $1.5 million to plaintiffs.
18. September 20, 2013 Michael Ward (Birdie Africa) dies in an accidental drowning at age 41.
19. 2018–2020 The last members of the MOVE 9 released from prison.
20. November 12, 2020 Philadelphia City Council adopts Resolution 200351, formally apologizing for the bombing. Mayor Jim Kenney issues parallel apology.
21. April 2021 Disclosure that Penn Museum holds remains of two MOVE children; public outrage; Penn and Princeton suspend related courses and apologize.
22. 2021–2022 Remains returned to MOVE family members through Mike Africa Jr.'s coordination.
23. 2024 Mike Africa Jr. publishes On a Move, the next-generation family memoir.

Cases on this archive that connect.

COINTELPRO (File 009) — the FBI counterintelligence program against Black political organizations through 1971. MOVE was founded after COINTELPRO's formal termination but in the operational and institutional environment COINTELPRO had created; the federal-agency role in the 1985 explosive-device supply is part of the same institutional pattern.

Operation CHAOS (File 019) — the CIA's contemporaneous domestic-surveillance program. CHAOS targeted the broader Black liberation movement of which MOVE was a small and idiosyncratic outgrowth.

The CIA Family Jewels (File 094) — the 1973 internal compilation of CIA illegal activities. The MOVE bombing post-dates the Family Jewels disclosures by twelve years but sits in the same institutional tradition of federal-agency willingness to deploy operational means against domestic political subjects.

More related files coming as the archive grows. Planned: the Fred Hampton killing in operational detail, the Wounded Knee 1973 occupation and response, the Attica prison uprising.

Full bibliography.

1. Africa, John. The Guidelines. MOVE Organization, circulating from c. 1973. MOVE's foundational doctrinal text.
2. Anderson, John, and Hevenor, Hilary. Burning Down the House: MOVE and the Tragedy of Philadelphia. W. W. Norton, 1987. The most comprehensive single contemporary journalistic treatment.
3. Wagner-Pacifici, Robin. Discourse and Destruction: The City of Philadelphia versus MOVE. University of Chicago Press, 1994. Scholarly sociological treatment of the 1985 confrontation in the context of the 1978 predecessor.
4. Philadelphia Special Investigation Commission, transcripts of public hearings, October 1985–February 1986. Temple University Urban Archives.
5. Philadelphia Police Department, After-Action Report on the Operations of May 12–13, 1985. Released in part to the MOVE Commission.
6. Goode, W. Wilson, with Howard, Joann Stevens. In Goode Faith: Philadelphia's Mayor Looks Back. Judson Press, 1992. Mayor Goode's own account.
7. Philadelphia Special Investigation Commission (MOVE Commission). Report of the Philadelphia Special Investigation Commission. March 6, 1986. 470 pages plus appendices. William H. Brown III, Chair.
8. Office of the Medical Examiner of the City of Philadelphia, Autopsy Reports for the eleven MOVE decedents, May 1985. Reproduced in part in the MOVE Commission record.
9. Africa, Ramona. Statements and interviews 1992–present, including post-release public appearances and the testimony provided in Africa v. City of Philadelphia.
10. Rendell, Edward G., Grand Jury Presentment files (sealed), 1988. Statement of no-bill made public; underlying record sealed by order of the Court of Common Pleas of Philadelphia County.
11. Africa et al. v. City of Philadelphia et al., U.S. District Court for the Eastern District of Pennsylvania, Civil Action No. 85-2745, jury verdict June 1996.
12. Philadelphia City Council, Resolution 200351, November 12, 2020, formally apologizing for the MOVE bombing. Introduced by Councilmember Jamie Gauthier.
13. Kassutto, Maya. "Remains of children killed in MOVE bombing sat in a box at Penn Museum for decades." Billy Penn, April 21, 2021.
14. Muhammad, Abdul-Aliy A. Reporting on the Penn Museum and Princeton MOVE remains, Philadelphia Inquirer, April–May 2021.
15. Africa, Mike, Jr. On a Move: Philadelphia's Notorious Bombing and a Native Son's Lifelong Battle for Justice. HarperOne, 2024.
16. Boyer, Peter J. "The Fire Last Time," The New Yorker, May 13, 2020 (35th-anniversary retrospective).
17. Federal Bureau of Investigation, Philadelphia Field Office, May 13, 1985 incident file. Partially released; chain-of-custody documentation for explosive materials transfer to Philadelphia Police partially redacted.