Joseph Kirckman, (London), c.1798.
Johann Fritz, (Vienna), c.1815.
William Stodart and Son, (London), c.1831.
Robert Wornum, (London), c.1842.
Muzio Clementi & Co., (London), Dec. 1806.
John Broadwood and Sons , (London), 1817/1818.
Christopher Ganer, (London), c.1790.
John Broadwood, (London), 1792.
William Rolfe and Sons, (London), c.1812.
Collard and Collard, (London), c.1836.
William Southwell and Son, (Dublin), 1799/1800.
Clementi & Co., (London), 1828.
Longman & Broderip, (London). Made by Thomas Culliford, July 1785.
Chappell & Co., (London), "DIGITORIUM", c.1875.
Virgil, (New York, USA), "PRACTICE CLAVIER", 1899.
