Find full details in Hubbard 1967, p. 133 ff., Russell 1973, p. 65 ff., Kottick 2003. Hubbard, Frank (1967). Three Centuries of Harpsichord Making (2 ed.). Harvard University Press. ISBN978-0-674-88845-6. An authoritative survey by a leading builder of how early harpsichords were built and how the harpsichord evolved over time in different national traditions. Russell, Raymond (1973). The Harpsichord and Clavichord: an introductory study (2nd ed.). London: Faber and Faber. ISBN0-571-04795-5. Kottick, Edward (2003). A History of the Harpsichord. Indiana University Press. ISBN0-253-34166-3. An extensive survey by a leading contemporary scholar.