Weiner, Irv: Irv Weiner's Sponge Ball Routine ©1952 Irv Weiner Softcover, saddle-stitched, 8.5x11"

Image courtesy eBay seller RaolsonMagic

Comments: Manu-secret, for use with any four small sponge balls. From the intro, "Here is a smooth routine with four sponges that is hard to beat. A really fine routine, you start with hands empty, balls appear, multiply, jump from hand to hand, and finally vanish completely, leaving that hands empty as in the start. No gimmicks are used."

Contents (I don't have full contents, but wanted to list the book for the Sponge Ball reference)

1 Introduction
1 Requisites
1 Routine