SPQR is a 12-book series with 15 primary works first released in 1990 with contributions by John Maddox Roberts.
1990 • 8 Readers • 274 pages • 4
1991 • 2 Readers • 4
1992 • 2 Readers • 3
1992 • 2 Readers • 4
1994 • 1 Reader
1995 • 2 Readers • 288 pages • 4
1996 • 1 Reader • 224 pages • 4
1997 • 304 pages
18 pages
2000 • 1 Reader • 212 pages • 3
2001 • 2 Readers • 272 pages • 3
2001 • 1 Reader • 222 pages • 4
2010 • 1 Reader • 288 pages • 5