Tom Clancy's Op-Center is a 18-book series with 18 primary works first released in 1995 with contributions by Jeff Rovin, Víctor Pozanco, and 4 others.
1995 • 20 Readers • 401 pages • 2.5
1995 • 8 Readers • 452 pages • 2.7
1996 • 7 Readers • 516 pages
1998 • 4 Readers • 375 pages • 2