Books by John Gregory Betancourt
The Diana Marburg, Occult Detective MEGAPACK®
2026
ISBN 9781667665580
The Further Adventures of Batman Volume 2: Featuring the Penguin
1992
ISBN 9780553560121- No cover
The Further Adventures of Batman Volume 3: Featuring Catwoman
1993
ISBN 9780553560695 
Roger Zelazny's The Dawn of Amber
2002
ISBN 9780743452403
Roger Zelazny's To Rule in Amber
2004
ISBN 9781596871328
Chaos and Amber
Roger Zelazny's Shadows of Amber
2001
ISBN 9781596871182
Pacifica
2002
ISBN 9781592240173
The First Science Fiction Novel MEGAPACK®
2016
ISBN 9781479421633
Human Spirit, Beetle Spirit: A Tale of the Riverworld
1992
The Fourth Science Fiction Megapack
2012
The Cthulhu Mythos Megapack: 40 Modern and Classic Lovecraftian Stories
2012
Pulp Classics: Strange Tales #6 (October 1932)
2005
ISBN 9781434460042
Infection