From The Atlantic:
There's no sex in Edith Wharton's best known work. Her Pulitzer prize-winning novel The Age of Innocence chronicles a decades-long affair between a man and his wife's cousin—where the two lovers don't so much as kiss. In Ethan Frome, a married man and his would-be mistress decide to kill themselves rather than succumb to the temptation to sleep with each other. Her short story "Roman Fever" uses an illegitimate child as a plot device—but does not describe any of the out-of-wedlock sexual activity that went into producing it.
Literary types get excited, then, when they discover Wharton's more explicitly erotic work. Jezebel's Anna North has unearthed a "prose fragment" from a story called "Beatrice Palmato" that Lapham's Quarterly published last winter. North introduces the two-page story with the promise, "Check out the Wharton you didn't read in English class."
[Note: The article doesn't mention it, but this discovery was first published in R. W. B. Lewis's Edith Wharton: A Biography in 1975.]