Bolo is a 7-book series with 7 primary works first released in 1976 with contributions by Keith Laumer, William H. Keith Jr., and David Weber.
1986 • 2 Readers • 3
1990 • 1 Reader • 283 pages
1997 • 1 Reader • 380 pages
2001 • 1 Reader • 393 pages
2001 • 1 Reader • 338 pages