From John Fisher's auction, lot 42.
A single page pamphlet which explains a trick in which the magician and the spectator, by cutting a deck in 4 packets, produce two dates, selected by them (and a birth date too).
Interesting trick, being however a known principle. This pamphlet is quite scarce: I've never seen it around. The author is Mickey MacDouglall, the gambler expert. The edges are yellowed and the paper is fading away.