Zufall, Bernard: Zufall's Memory Trix No. 3 Calendar Memorizing ©1940 Bernard Zufall, NY Softcove, saddle-stitched, 5.5x8.5", 14 pages

Image courtesy eBay seller maury123

Comments: Feats of Memorization. Zufall published a series of 6 volumes in the Memory Trix series, including:
No. 1 Magazine Memorizing
No. 2 Mental File Index
No. 3 Calendar Memorizing
No. 4 Memorizing a Deck of Playing Cards
No. 5 Memorizing Numbers
No. 6 Memorizing Facts and Figures

Contents (Partial, from page images, numbers are not page numbers):

1 Effect: Performer instantly names day of the week for any date named from 1752 to the present
2 Preparation: using arithmetic, 12 month code, and 100 year code list
3 Code Words for Months
4 Examples