The Armstrong Piano Company was established by W.B. Armstrong in East Rochester, NY in 1884. By the turn-of-the-century, Armstrong went into partnership with Foster & Company, forming the Foster-Armstrong Piano Company. Foster-Armstrong was a major force in piano manufacturing in the early 20th Century, and they built pianos under the names of Foster, Armstrong, and Foster-Armstrong. During the late 19th and early 20th Centuries, the firm built a number of higher quality pianos for a dealer by the name of James F. Cook of Lawrenceburg, Indiana, under the brand name of "J. F. Cook". By the 1920's era, Foster-Armstrong merged with the giant Aeolian-American Corporation, and they began building pianos for several popular piano manufacturers including Haines, Fischer, Marshall & Wendell, Franklin, Holmes & Sons, Brewster, and Stratford. Aeolian continued to build pianos under many of these names throughout the 20th Century before going out of business in the 1980's.

1900-43000         1909-62000         1918-79000        1927-89600
1901-45000         1910-63700         1919-80200        1928-91500
1902-47000         1911-65500         1920-81100        1929-93700
1903-49000         1912-7800          1921-82900        1930-94000
1904-51000         1913-71000         1922-83900        1931- 94100
1905-53000         1914-73600         1923-84900        1932-94300
1906-55400         1915- 74000        1924-86600        1933-94400
1907-57600         1916-75600         1925-87800        1934-95800
1908-59900         1917-78000         1926-88700        1935-96000