Chaosium's Call of Cthulhu books is a 15-book series first released in 1976 with contributions by Robert Bloch, Robert E. Howard, and 50 others.
1981 • 3 Readers • 288 pages
1999 • 572 pages
1995 • 204 pages
1996 • 259 pages
1976 • 258 pages
1995 • 272 pages
1993 • 2 Readers • 304 pages • 5
1997 • 1 Reader • 4
1997 • 256 pages
2001 • 12 Readers • 260 pages • 4