Hummer, Bob: Half-A-Dozen Hummers ©1940 Samuel Berland Softcover, saddle-stitched, 6x8.75", 12 pages

Image courtesy eBay seller Addiesma

Image courtesy eBay seller DonBursell

Comments: Six original card routines

Contents (numbers are not page numbers):

1 The Magic Separation: magician can instantly match number of face up cards in two portions of the deck
2 Face Up Prediction: number predicted matches location of card selection
3 Lite-Ning Addition: magician instantly announces total of selected (not forced) cards
4 Two Card Transpo: between pocket and deck
5 Two Card Location: two cards located though chosen behind the magician's back
6 Card and Ribbon: selection vanishes from deck and is found attached to a ribbon