Solomon Stone's Marvelous Mental Calculator
Booklet cover, with colors crudely and obviously stripped in. Produced by the New York Popular Publishing Company.
Sheaff : ephemera
A place for show-and-tell, wondering aloud, and wandering the trails of curiosity . . . Comments, corrrections, additional information, fresh insights, other interpretations, more images, or related observations will be welcomed!
Contact: [email protected]
All images not otherwise indicated are copyrighted by Richard D. Sheaff and not to be used for any purpose without written permission.