4 books in series

Fünf Freunde Folgeserie

Fünf Freunde Folgeserie is a 4-book series with 4 primary works first released in 1971 with contributions by Claude Voilier and Enid Blyton.

The Famous Five in Fancy Dress
The Famous Five and the Missing Cheetah
The Famous Five and the Pink Pearls
The Famous Five and the Z-Rays