VALIS Trilogy is a 6-book series with 3 primary works first released in 1981 with contributions by Philip K. Dick, Tomasz Bieroń, and 2 others.
1981 • 1 Reader • 312 pages • 4
1985 • 30 Readers • 214 pages • 3.6
1985 • 2 Readers • 269 pages • 3
1985 • 2 Readers • 85 pages • 3.5