Hummer, Bob: The Whispering Spirit ©1941 Samuel Berland, Chicago, IL Softcover, folded manuscript, 8.5x11", 2 pages

Image courtesy eBay seller RaolsonMagic

Comments: a single effect manuscript

Contents (from booklet):

1 Effect: Spectator cuts part of deck, writes dead persons age, does some math, and performer reveals number of cards cut or dead person's age
1 Note: principle
1 Procedure
2 Conclusion