Ukridge is a 7-book series with 7 primary works first released in 1906 with contributions by P.G. Wodehouse.
1906 • 1 Reader • 4
1924 • 2 Readers • 220 pages • 2
1937 • 3 Readers • 218 pages • 3.5
1940 • 1 Reader • 224 pages • 4
1950 • 1 Reader • 187 pages • 3
1959 • 2 Readers • 224 pages • 3
1966 • 4 Readers • 319 pages