3Alfred Dolge, Pianos and Their Makers, Covina Publishing Company, 1911.
4Stewart Pollens, The Early Pianoforte, Cambridge University Press, 1995.
5Helen R. Hollis, Pianos in the Smithsonian Institution, Smithsonian Institution Press City of Washington, 1973.
6Edwin M. Good, Giraffes, Black Dragons, and Other Pianos: a technological history from Cristofori to the modem concert grand, Stanford University Press, second ed, 2001.