Joro (Bruno Hennig): Joros Schwamm Ball Becher Spiel ©1976 Joro Softcover, stapled manuscript, 8.5x11", 3 pages

Image courtesy Magicbooks.be

Comments: Photo illustrated manual of a "Benson Bowl" style routine using spongeballs. In German.

Contents (courtesy Dietrich Keller at magicbooks.be):

2 Joros Schwamm Ball Becher Spiel