21.
 |  | Title: Keepers Companion: A Core Rulebook for Keepers (Call of Cthulhu Roleplaying Game, 2388) by Chaosium Inc. Staff, Keith Herber, David Mitchell, Lynn Willis ISBN: 1568821441 Publisher: Chaosium Pub. Date: October, 2000 List Price: $23.95 Amazon.com Price: $16.77 |
22.
 |  | Title: Cthulhu by Gaslight: Horror Roleplaying in the 1890's (Call of Cthulhu Roleplaying Game Series) by William A. Barton, Sandy Petersen, Lynn Willis ISBN: 0933635559 Publisher: Chaosium Pub. Date: March, 1989 List Price: $18.95 Amazon.com Price: $18.95 |
23.
 |  | Title: The Cairo Guidebook: A Guide to Cairo in the 1920s by Lynn Willis, Marion Anderson, Marian Anderson ISBN: 1568820259 Publisher: Chaosium Pub. Date: June, 1995 List Price: $16.95 Amazon.com Price: $16.95 |
24.
 |  | Title: Call of Cthulhu: Horror Roleplaying in the Worlds of H. P. Lovecraft by Lynn Willis, Gene Day, Tom Sullivan ISBN: 1568820143 Publisher: Chaosium, Inc. Pub. Date: November, 1994 List Price: $30.00 Amazon.com Price: $30.00 |
25.
 |  | Title: Petersen's Field Guide to Cthulhu Monsters by Petersens, Sandy Peterson, Lynn Willis, Tom Sullivan ISBN: 0933635486 Publisher: Chaosium Pub. Date: March, 1989 List Price: $15.95 Amazon.com Price: $15.95 |
26.
 |  | Title: King Arthur Companion: A Guide to the People, Places and Things of Arthur's Britain by Lynn Willis, Phyllis Ann Karr, Jody Lee ISBN: 0933635176 Publisher: Chaosium Pub. Date: October, 1983 List Price: $19.95 Amazon.com Price: $19.95 |