Fünf Freunde is a 19-book series with 19 primary works first released in 19 with contributions by Enid Blyton, Juan Ríos de la Rosa, and 3 others.
1942 • 8 Readers • 192 pages • 4.7
1942 • 2 Readers • 160 pages
1950 • 1 Reader • 211 pages • 5
1953 • 1 Reader • 202 pages • 4