The Incredible Upside-Downs of Gustave Verbeek #[nn]

Based on the Real Free Press International (Oude Niewstraat 10; Amsterdam; Netherlands), 1973. With 26 recolored strips without "The Fairy Palace".

Introduction written by David A. Kaler, dated July 1, 1976.

Was the basis of the French translation, Dessus-Dessous, published by Pierre Horay in 1977.