1910

Emma Goldman first begins speaking publicly in favor of gay rights.

Yukio Mishima, the gamed Japanese bisexual author “Confessions of a Mask” was born.
1911

J Romaine Brooks completes La Trajet ("The Crossing")

1912

Heterodoxy formed in Brooklyn as a feminist luncheon club.

1913

Publication of O Pioneers! by Willa Cather.

1914

World War I begins.

The word faggot is first used in print in reference to gays in a vocabulary of criminal slang published in Portland, Oregon: "All the fagots [sic] (sissies) will be dressed in drag at the ball tonight".

William Burroughs, the novelist, “Queer” and “Junkie” was born in St. Louis.
1915

Margaret Anderson's impassioned defense of same-sex love in The Little Review.

1916

"The first gay church, an Anglican-derived Liberal Catholic Church is founded in Sydney, Australia, by Charles Webster Leadbeater."

My Days and Dreams by Edward Carpenter.
1919

Scientific Humanitarian Committee becomes the Berlin Institute of Sexual Research.