The American Policy Player's Guide and Dream Book (1892)

Policy, also known as a numbers racket, was an illegal lottery played mostly in poor neighborhoods (black, Italian, latin)  in the US, wherein a bettor attempts to pick three digits to match those that will be randomly drawn the following day (Source). The book below--which could pass as a book on dream interpretation--has a secondary purpose. To associate winning policy numbers with the dreamer's dream. More context: see, Herbert Gladstone Parris: Professor Konje Policy Players Dream Books and Policy Pete’s Dream Book (1933) | Digital Harlem Blog.