A. Bertram Chandler, "Spartan planet"

Imagine a world with only men, with a social structure developed on homosexual relationships. Chandler's Spartan Planet is such a world - until his recurring charachters John Grimes and Peggy Lazenby arrive on a planetary survey.

The planet - founded by a misogynistic captain and based on Greek pseudo-history - struggles to adapt to the inclusion of women in its social structure. Chandler handles the transition well.

Gay characters are treated with empathy and allowed individual dignity, which is quite commendable considering when this book was written and its target audience.