Source-led exhibit · United States · 1952–1987
The 1973 DSM decision, without the shortcut
The American Psychiatric Association's December 1973 action removed homosexuality itself from DSM-II, but it did not erase the diagnostic legacy in one step. A narrower replacement remained, the membership referendum followed in 1974, and a related diagnosis persisted until 1987. This US exhibit was reviewed on against the APA’s published position record, Frank Kameny’s contemporary open letter preserved by the Library of Congress, the American Psychological Association’s 1975 resolution, and later scholarly syntheses. Those records establish the institutional sequence and show that change was contested. They do not show that stigma, coercive treatment, or discrimination ended in 1973, and they cannot assign the decision to science or activism alone. Read the dated sequence, then inspect the original records in the source ledger.
The point
The accurate version is neither “science corrected itself overnight” nor “a vote simply redefined illness.” Researchers had challenged the pathology model; activists forced a closed profession to confront the harm and evidence; APA committees debated what counted as a mental disorder; trustees acted; opponents forced a membership referendum; and diagnostic remnants continued afterward. The decision was institutional, scientific, political, and human at the same time.
What changed, in order
DSM-I classified homosexuality within sociopathic personality disturbance.
DSM-II continued to list homosexuality as a mental disorder.
Gay and lesbian activists challenged the classification at APA meetings while researchers and psychiatrists disputed its scientific basis.
The APA Board of Trustees announced that homosexuality itself would no longer be listed as a mental disorder.
APA members upheld the board decision in a referendum; the revised DSM-II printing substituted Sexual Orientation Disturbance.
The American Psychological Association endorsed removal and adopted an anti-discrimination resolution.
DSM-III retained ego-dystonic homosexuality; DSM-III-R removed that diagnosis in 1987.
What this exhibit does not claim
This exhibit reconstructs an institutional decision and its immediate diagnostic aftermath. It does not represent every LGBTQ+ experience, measure every harm produced by the diagnosis, or treat a professional association's vote as a complete account of social change.
Terminology follows the historical documents when describing their categories. It is not Couch Commons’ description of LGBTQ+ people.
Source ledger
Each entry says what the source can and cannot carry. All were accessed August 21, 2026.
primary · accessed
Position Statement on Homosexuality and Civil Rights
Supports: The statement's institutional authorship, approval meeting of December 14–15, 1973, and April 1974 publication record.
Does not establish: The full range of activist influence, individual experiences, or every implementation consequence.
primary · accessed
The Kameny Papers: December 15, 1973 open letter
Supports: A contemporary activist response preserved by the Library of Congress.
Does not establish: That one activist's response represented every gay or lesbian person or organization.
institutional · accessed
Alfred M. Freedman, M.D.
Supports: The APA Foundation's record of the December 15 announcement and the board vote's form.
Does not establish: That the institutional account is a neutral or complete history of the campaign.
primary · accessed
Discrimination Against Homosexuals
Supports: The American Psychological Association's January 1975 endorsement and civil-rights resolution.
Does not establish: That discrimination or harmful practice ended when the policy was adopted.
scholarly synthesis · accessed
Out of DSM: Depathologizing Homosexuality
Supports: A sourced reconstruction of the scientific disputes, activism, board process, referendum, and later diagnostic categories.
Does not establish: A single uncontested causal explanation for the decision.
scholarly synthesis · accessed
Context for LGBT Health Status in the United States
Supports: The National Academies synthesis of the decision within a broader US health and civil-rights chronology.
Does not establish: That diagnostic change alone produced later legal, cultural, or health outcomes.
Read the history charter · Place this event in the wider chronology