Alvirah & Willy is a 11-book series with 11 primary works first released in 1987 with contributions by Mary Higgins Clark and Carol Higgins Clark.
1987 • 9 Readers • 360 pages • 3.6
1994 • 8 Readers • 265 pages • 3.3
1998 • 8 Readers • 256 pages • 3.4
2000 • 8 Readers • 324 pages • 3.9
2004 • 3 Readers • 4
2006 • 2 Readers • 287 pages • 5
2016 • 10 Readers • 3.8
2017 • 6 Readers • 4.3
1990 • 1 Reader • 96 pages • 3
1990 • 1 Reader • 5
1993 • 1 Reader • 5