DeKalb, IL. Made coin piano, orchestrion, pipe organ, and mortuary organ rolls, 1920-1941. Owned and operated by Ernest G. Clark, who acquired the coin-operated roll division of QRS after that company was split from the Melville Clark Piano Co. Ernest retained the right to use QRS roll arrangements for his coin-operated rolls. In the last years of business, Clark’s best customers were amusement companies who owned air calliopes, and manufacturers of non-musical roll-operated horse race gambling machines such as Pace’s Races.