The closest thing to a published "gay agenda", and what is (far as I know) exclusively quoted as such, is:
"After the Ball. -How America Will Conquer Its Fear and Hatred of Gays in the 90's" By Marshall Kirk and Hunter Madsen, published in 1989... A couple found comments regarding this "Gay Manifesto": 1~ "...this book became the authoritative public relations manual for the homosexual agenda, and its authors presented the book as a distillation of public relations advice for the homosexual community." 2~ "...This book is a blueprint for gay activists for applying brainwashing techniques developed by the totalitarian regime of Communist China." 3~"...Most gay people, and most proponents of gay rights have never read or even heard of the book."