John Marshall Harlan II,
United States v. Calamaro — Opinion of the Court
“ By definition the 'numbers game' is among the wagering transactions included in the statute.At the outset we must understand some professional gambling terminology which has been given us by the parties. A numbers game involves three principal functional types of individuals: (1) the 'banker,' who deals in the numbers and against whom the player bets; (2) the 'writer,' who, for the banker, does the actual selling of the numbers to the public, and who records on triplicate slips the numbers sold to each player and the amount of his wager ”
