Gilman, Charlotte Perkins: Herland, v1.2, 20 Sept 2007.
 

Herland
by Charlotte Perkins Stetson Gilman
[1915]

A feminist Utopia. Three men blunder into a society of women.

From Sacred-texts.com’s notes:

Gilman's feminist novel, ‘Herland’ was one of a flood of utopian books at the turn of the 20th century where sex roles are inverted. Gilman imagined a society where women not only rule, but are the only gender. Reproducing by parthenogenesis, they worship a female deity. This particular book later became a must-read for the second-wave feminists, particularly the 'separatist' wing.

Edited to add:
I have taken down v1 and replaced it with a new version incorporating seven corrections. The original was downloaded 6 times.