Henry Huggins is a 5-book series with 5 primary works first released in 1950 with contributions by Beverly Cleary.
1950 • 26 Readers • 212 pages • 3.8
1953 • 14 Readers • 212 pages • 4
1957 • 8 Readers • 192 pages • 3.7
1962 • 6 Readers • 228 pages • 4.3
1964 • 13 Readers • 192 pages • 4