[1] Timmons received his Bachelor of Arts in film from the University of California, Los Angeles (UCLA).

While at UCLA, where he majored in film, his work as an activist impressed Mark Thompson, who was then the senior editor of The Advocate, a national gay and lesbian news magazine.

[5] Timmons was the author of The Trouble With Harry Hay: Founder of the Modern Gay Movement, published in 1990.

[7] He was a co-organizer of the dedication of the Mattachine Steps in Silver Lake named for the Mattachine Society on April 7, 2012, alongside Mark Thompson, Wes Joe, Mitch O'Farrell, and Eric Garcetti (then a councilor and later mayor of Los Angeles).

[5] Timmons died on January 28, 2017, at the Serrano North Convalescent Hospital in Hollywood, California, from cardiac arrest, at the age of 60.