Abstract: Henry Disston & Sons, Inc. was a major manufacturer of saws and other woodworking tools and one of the largest industrial firms in Philadelphia. The Henry Disston & Sons, Inc. had a number of subsidary companies, these records contain a small number of account books from only three of the firms subsidaries. There are accounts for: the Tacony Fuel Gas Company, the Henry Disston & Sons File Company, Limited, and the Henry Disston & Sons Iron & Steel Works, and an insurance ledger from the Estate of Henry Disston.