Gredown's Bite of the Vampire

The cover of Gredown's Bite of the Vampire is recycled from a previous issue, in this case Planet of Vampires #2:

The cover is likely painted by Phil Belbin, and is based on a variety of panels from the first story in Planet of Vampires #2, The Night of the Capture:

The contents are as follows:

Macabre Joke [aka A Macabre Joke]

The Vampire Hunter, originally published in Mad House #97, January 1975

An Unfinished Tale, originally published in The Many Ghosts of Dr. Graves #42, October 1973

The Hungry Vampire, originally published in Weird v6#3, April 1972

Who Prowls The Night, originally published in Monster Hunters #6, July 1976

The Bloody House originally published in Weird v5#5, October 1971

Return to Die!, originally published in Ghostly Tales #86, June 1971 

Enter Freely And Of Your Own Free Will!, originally published in Haunted #21, April 1975

The Happy Dead, originally published in Mad House #95, September 1974

This issue includes a 1-page feature, Facts for Ghouls:

Facts for Ghouls was a filler feature used in a number of Eerie Publications. I have identified another Facts for Ghouls filler used in over half a dozen Eerie Publications, but as yet have not identified the first instance this one was published. 

Most, if not all of the stories in Bite of the Vampire were published in earlier Gredown issues, and at least one - An Unfinished Tale - was published by Murray in Planet Series 2 #7 The Many Ghosts of Doctor Graves.