General Quotes - page 95
I had trouble at first, in the early 1900s, in selling Mr. Leland our roller bearings. He then taught me the need for greater accuracy in our products to meet the exacting standards of interchangeable parts. Mr. Leland came to the industry with a mature experience in general engineering and in gasoline engines, which he had long made for boats. One of his specialties was precision metalwork, which went back to his experience in toolmaking for a federal arsenal during the Civil War, and which he afterward developed in the Brown and Sharpe Company, machine-tool makers of Providence, Rhode Island. It has been called to my attention It has been called to my attention that Eli Whitney, long before, had started the development of interchangeable parts, a fact which suggests a line of descent from Whitney to Leland to the automobile industry.
Alfred P. Sloan