Scholastic Hippo is a publisher who has published at least 7 editions.
Killer Puzzles
January 17, 1997 • Physical Book • 1 Reader • 96 pages
May 22, 2006 • Physical Book • 1 Reader • 127 pages
Horrible Histories
September 15, 2000 • Physical Book • 1 Reader • 128 pages • Format Paperback
February 20, 1998 • Physical Book • 1 Reader • 128 pages
February 16, 2001 • Physical Book • 1 Reader • 128 pages
#2 of 4 in Golden Armour
January 1, 2000 • Physical Book • 1 Reader • 204 pages • Format Paperback • 4