We’ve got a load of good public domain short fiction compilations at Standard Ebooks;[1] the favourite that I’ve produced has to be Leonid Andreyev’s work.[2] He’s often referred to as the Russian equivalent of Edger Allan Poe, but he has his own definite flavour. “The Wall” is a good example.[3]

[1] https://standardebooks.org/subjects/shorts

[2] https://standardebooks.org/ebooks/leonid-andreyev/short-fict...

[3] https://standardebooks.org/ebooks/leonid-andreyev/short-fict...