Bifrost Guardians is a 4-book series with 4 primary works first released in 1987 with contributions by Mickey Zucker Reichert.
1987 • 2 Readers • 222 pages
1988 • 1 Reader • 304 pages • 4
1989 • 1 Reader • 308 pages • 3
1991 • 1 Reader • 320 pages • 4