Since we seem to have lost all of the old posts, may as well start with the basics. Here are the Robert E. Howard Conan stories that are public domain, on Wikisource.
The Hour of the Dragon
The Phoenix on the Sword
The Tower of the Elephant
Black Colossus
The Slithering Shadow
The Pool of the Black Onew
Rogues in the House
The Frost Giant's Daughter
Shadows in the Moonlight
Queen of the Black Coast
The Devil in Iron
People of the Black Circle
A Witch Shall Be Born
Jewels of Gwalhur
Beyond the Black River
Shadows in Zamboula
Red Nails
The Hyborian Age
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Cimmeria, a poem