[1] It was notable for providing a forum for the development of more radical conceptions of feminism than the suffrage and women's club movements of the time.
[8] Among the notable members were Mary Ware Dennett, Susan Glaspell, Charlotte Perkins Gilman, Elizabeth Gurley Flynn and Ida Rauh.
[9] Heterodites Alice Kimball, Alison Turnbull Hopkins, Doris Stevens, and Paula Jakobi were arrested in 1917 and 1918 suffrage protests, and served time in the Occoquan Workhouse, jail, or prison psychiatric wards.
[12] The Heterodoxy Club provided a safe space for activism to begin and progress, as it was the main feminist group in the early 20th century where diverse types of women could gather weekly to discuss their opinions on issues regarding women's rights while also reflecting on their diverse political views and personal lives with open minds.
[20] The club promoted and hosted many original members of the birth control movement, like Emma Goldman, Mary Ware Dennett, and Margaret Sanger.
[17] These non-official members of the Heterodoxy Club attended meetings in order to collect ideas from the Heterodites about how women would like to see different birth control forms being used in the future, discussing reproductive rights as a whole.
[18] Many members of the Heterodoxy Club identified themselves as pacifists, some in 1915 joining Chrystal Eastman, Vorse and others in forming the Woman's Peace Party.
[22] Hinkle originally studied with Sigmund Freud, but began to become wary of his ideas regarding psychosexual theories, as they sexualized women while also not considering them fully capable people.
[23] One of Freud's theories suggests that women are a part of the psyche of men which Hinkle heavily disagreed with, so she moved to create an area of psychology driven by feminism.