Tracy Baim, Barbara Gittings: Gay Pioneer (Chicago: Prairie Avenue Productions, 2015).

John D’Emilio, Sexual Politics, Sexual Communities: The Making of A Homosexual Minority in the United States, 1940-1970 (Chicago: University of Chicago Press, 1983), 149-175.

Martin Duberman, Stonewall (New York: Dutton, 1993), 105-114, 165, 209-233.

David Eisenbach, Gay Power: An American Revolution (New York: Carroll and Graf, 2006), 35-50, 107-108.

Simon Hall, “The American Gay Rights Movement and Patriotic Protest,” Journal of the History of Sexuality 18, no. 3 (2010): 536-562.

Simon Hall, “Protest Movements in the 1970s: The Long 1960s,” Journal of Contemporary History 43, no. 4 (Oct. 2008): 655-672.

Glenn Holsten, director, Gay Pioneers (Philadelphia: WHYY/Equality Forum, 2004).

Michael G. Long, Gay is Good: The Life and Letters of Gay Rights Pioneer Frank Kameny (Syracuse: Syracuse University Press, 2014), 91-93, 101-106, 192-194.

Eric Marcus, Making History: The Struggle for Gay and Lesbian Equal Rights, 1945-1990 (New York: HarperCollins, 1992), 89-135, 175-186, 213-227.

Toby Marotta, The Politics of Homosexuality (Boston: Houghton Hifflin, 1981), 22-68, 115-119, 164-166.

Robert Self, All in the Family: The Realignment of American Democracy since the 1960s (New York: Hill and Wang, 2012), 79, 88, 164.

Marc Stein, “‘Birthplace of the Nation’: Imagining Lesbian and Gay Communities in Philadelphia, 1969-1970,” Creating A Place for Ourselves: Lesbian, Gay, and Bisexual Community Histories, ed. Brett Beemyn (New York: Routledge, 1997), 253-288.

Marc Stein, City of Sisterly and Brotherly Loves: Lesbian and Gay Philadelphia, 1945-72 (Chicago: Univ. of Chicago Press, 2000; 2^nd edition with new preface, Philadelphia: Temple Univ. Press, 2004), 245-250, 273-274, 291-299.

Marc Stein, Rethinking the Gay and Lesbian Movement (New York: Routledge, 2012), 63-78.

Donn Teal, The Gay Militants (New York: Stein and Day, 1971), 30, 86-87, 322.

Kay Tobin and Randy Wicker, The Gay Crusaders (New York: Paperback Library, 1972), 89-134, 205-224.

Note that there has also been significant discussion of the history of the Annual Reminders in two Philadelphia-based LGBTQ newspapers: Philadelphia Gay News and Au Courant.