Open Library
Horror
Fear is the oldest story.

Thirst
Guy N. Smith

Chasing the Boogeyman
Richard Chizmar

Hunted
Darcy Coates

Blood Kin (Pinnacle Horror)
Ronald Kelly

My Darling Dreadful Thing
Johanna van Veen

The Woods All Black
Lee Mandelo

Monstrilio
Gerardo Sámano Córdova

The Vampire King
Michael A. Martin

Thaw
Bryan Dunn

Straight
Chuck Tingle

Moon of the Crusted Snow
Waubgeshig Rice

Clive Barker's A-Z of horror
Clive Barker

Psycho
Janet Leigh

Fallen
Mia Sheridan
Tales (Cask of Amontillado / Descent Into the Maelstrom / Fall of the House of Usher / Gold Bug / Ligeia / Masque of the Red Death / Murders in the Rue Morgue / Pit and the Pendulum / Purloined Letter / William Wilson)
Edgar Allan Poe

The Great Book of Thrillers
H. G. Wells

I Will Break You
Gigi Styx

Seven Tales (Black Cat / Fall of the House of Usher / Ligeia / Man of the Crowd / Mesmeric Revelation / Oval Portrait / Purloined Letter)
Edgar Allan Poe

The United States in Literature -- The Glass Menagerie Edition
James Edwin Miller

The United States in Literature -- All My Sons Edition
James Edwin Miller