Open Library
Horror
Fear is the oldest story.

Fallout
Lisa Henry

Penpal
Dathan Auerbach

The Real Monster
Angel R Sánchez

Shadows Before the Maiming
Scott C. Holstad
The School
Ed Kelleher

Rise Of The Wolf
Curtis Jobling

Wasting the Dawn
David Hurwitz
Beach House
Unknown

All in Fear
J.A. Rock

Ugly Heaven, Beautiful Hell
Jeffrey Thomas
Short Stories (Black Cat / Tell-Tale Heart)
Edgar Allan Poe

Fear itself
Stephen Hessel

When Devils Sing
Xan Kaur

ANOTHER SIDE OF EVIL
JAX LAFFER
Two Skeletons on the Telephone and Other Poems from Tough City
Paul Duggan

Traditions in literature -- Seventh Edition
James Edwin Miller

Occulta Daemonia
O.D. Hawrose

Johnny the Homicidal Maniac
Jhonen Vasquez
Edgar Allen Poe (Black Cat / Cask of Amontillado / Fall of the House of Usher / Gold Bug / Metzengerstein / Murders in the Rue Morgue / Narrative of Arthur Gordn Pym / Never Bet the Devil Your Head / Pit and the Pendulum / Purloined Letter / Tell-Tale Heart)
Edgar Allan Poe

The New Annotated H. P. Lovecraft
H.P. Lovecraft