This paperback book has a yellow and turquoise cover. It was published in 1952 by the Punched Card Publishing Company of Detroit, Michigan. The punch card was an early means of date storage that could be read by computers or sorted and calculated by fields by specialized machines. By the 1950s the punched card had moved beyond merely recording census data, and was across the corporate landscape for billing, transportation schedules, libraries, payroll, and inventory management. This book served as a trade publication for the Punched Card Publishing Company, illustrating better business practices and new uses of punch cards and devices for reading them.
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