David S. Neft (1936- ) was the driving force behind The Baseball Encyclopedia, affectionately known to a generation of baseball fans as “Big Mac.” It was published by Macmillan in 1969, totaling 2,338 pages and weighing six and a half pounds. Working for Information Concepts, Inc, David led the work that produced the Big Mac, which was the first computer-based compilation of baseball records, setting the stage for much of what has come since. The three-year task filled in many gaps in the official data from the early years of baseball history, especially from the 19th century. After leaving ICI, David established The Sports Encyclopedia: Baseball with partner Richard M. Cohen, creating an annual publication updated each spring. He broadened his research to include basketball and football encyclopedias, but it is his precise and painstaking baseball investigations which established his reputation.