This podcast is about the "The Robinson Telegraphic Cipher," a reference book authored by Stephen L. Robinson. This cipher is designed for telegraphic communication in commodity markets, allowing users to condense lengthy trade messages into single code words. The extensive lists demonstrate how common words are systematically assigned to represent specific commodities (like Wheat, Corn, Oats, and Pork), qualities of goods, market conditions (such as advancing or declining prices), time of delivery, quantities and fractions, and shipping/financial instructions (including numerous railroad and ocean lines).