Lewis Barnavelt is a 10-book series with 10 primary works first released in 1973 with contributions by John Bellairs, Brad Strickland, and 2 others.
1973 • 43 Readers • 5 pages • 3.8
1976 • 8 Readers • 208 pages • 4.3
1993 • 1 Reader • 176 pages
1995 • 1 Reader • 153 pages
1998 • 2 Readers • 176 pages