Larsen, William: I Won't Play Cards With Him ©1931 William Larsen, F.G. Thayer Magic Softcover, stapled folded manuscript, 8.5x11", 7 pages

Image courtesy eBay seller JayAndLefty

Comments: A short treatise on new card effects. Included in Trickshop.com's "More L.W. Card Magic". These are not self-working effects.

Contents (based on eBook version, page numbers likely do not match original)

1 A Count Down Detection: after two questions magician names card counted down to
2 The Cut In Detection: location of card cut into the deck
3 Think of a Card: location of card chosen from fanned portion of deck
4 Shuffle It Yourself: magician names card chosen in another room, using a special deck
5 A Few Hands of Cards: a Poker routine