From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). —

Father of Frank H. Niemann; with John Closs of Cincinnati, Ohio, 1857-1859; with Charles S. Barker in France, 1860-1862; with Aristide Cavaillé-Coll of Paris, France c. 1862-c. 1867; in France and Meppen, Germany c. 1868-c. 1872; in Baltimore, Maryland, 1872; succeeded by his son; firm closed c. 1908.

Staff: C. Louis Miller.

Sources:

• Susan Caust Farrell, Directory of Contemporary American Musical Instrument Makers (Columbia, MO: The University of Missouri Press, 1981), 278.
• Orpha Ochse, The History of the Organ in the United States (Bloomington: Indiana University Press, 1975), 292.
• Piano and Organ Purchaser's Guide, Purchaser's Guide to the Music Industries, (New York: Music Trades).
• Elizabeth Towne Schmitt.