The feminist movement in the late 1960s and early 1970s saw the development of a more politicized voice in lesbian literature and more mainstream acceptance of lesbian-themed literature that moved away from the 'tragic lesbian' theme that had dominated earlier works. A pioneering autobiographical novel of this era was the picaresque 1973 novel "Rubyfruit Jungle" by Rita Mae Brown, which became a national best-seller. Jill Johnston argued for lesbian separatism in her 1973 book "Lesbian Nation". In the 1970s, more voices of American lesbians of color began to be heard, including works by Audre Lorde, Jewelle Gomez, Paula Gunn Allen Cherrie Moraga, and Gloria Anzaldua. In France, Monique Wittig published "Les Guérillères", (The Women Warriors), which envisioned a lesbian-dominated world. Similarly, Joanna Russ's 1975 novel "The Female Man" contains an alternative universe inhabited solely by lesbians. The 1970s also saw the advent of feminist and LGBT publishing houses, such as Naiad Press, and literary magazines like "Sinister Wisdom", and "Conditions" which published lesbian works. Adrienne Rich and Judy Grahn were important poets and essayists of the era. "Patience and Sarah" by Alma Routsong, published under the pen name "Isabel Miller" in 1971, examined the historical confines of a romance between two 19th century women in a Boston Marriage.