The ability to live safely out of the closet is very much a modern phenomenon (still largely only possible in the Western world) that is within the living memory of the generation who first came out en masse, the Boomers. We must not forget the countless generations who preceded us and did not have that freedom, but who lived and loved as best they could under horribly oppressive conditions.
Here's a selection of those past voices from the closet --
I couldn't find any publication data on that book but a good summary of Gordon and Gilbert's wartime love affair is available here.
Another voice from the distant past -- a poem written by medieval Christian mystic St. Hildegard von Bingen to her beloved nun and muse Richardis von Stade:
I am come into my garden, my sister, my spouseI have gathered my myrrh with my spiceI have eaten my honeycomb with my honeyI have drunk my wine with my milkEat, o friendsDrink, yea drink abundantly, o belovedI sleep, but my heart wakethIt is the voice of my beloved that knockethSaying, open to me, my sister, my love, my dove, my undefiledFor my head is filled with dewAnd my locks with the drops of the night.
And further to the Sappho fragment at the beginning of this post, there's a famous modern poem written in response to it which is the perfect way to conclude this post --
My voice rings down through thousands of yearsTo coil around your body and give you strength,You who have wept in direct sunlight,Who have hungered in invisible chains,Tremble to the cadence of my legacy:An army of lovers shall not fail.
-- Rita Mae Brown