This specific edition, ISBN 0870541595 from 1990, contains nine of the ten tales of the 1970s Vol. 1 editions:

*The Call of Cthulhu by H. P. Lovecraft

*The Return Of The Sorcerer by Clark Ashton Smith
*Ubbo-Sathla by Clark Ashton Smith
*The Black Stone by Robert E. Howard
*The Hounds of Tindalos by Frank Belknap Long
*The Space-Eaters by Frank Belknap Long
*The Dweller in Darkness by August William Derleth
*Beyond The Threshold by August Derleth
*The Salem Horror by Henry Kuttner

and six tales from the corresponding Vol. 2:
*The Shambler from the Stars by Robert Bloch
*The Haunter of the Dark by H. P. Lovecraft
*The Shadow from the Steeple by Robert Bloch
*Notebook Found in a Deserted House by Robert Bloch
*Cold Print by Ramsey Campbell
*The Return of the Lloigor by Colin Wilson

NOT included are
*"The Haunter Of The Graveyard" by J. Vernon Shea, that is found in the Volume 1 books, and

*"The Sister City" and
*"Cement Surroundings" by Brian Lumley, nor

*"The Deep Ones" by James Wade, which are all found in Volume 2 editions.

Also included are seven new tales:

*"The Terror from the Depths" by Fritz Leiber
*"Rising with Surtsey" by Brian Lumley
*"My Boat" by Joanna Russ
*"Sticks" by Karl Edward Wagner
*"The Freshman" by Philip José Farmer
*"Jerusalem's Lot" by Stephen King
*"Discovery Of The Ghooric Zone" by Richard A. Lupoff