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

Succeeded H. B. Votteler firm; established by Henry B. Votteler and John Hettche in Cleveland, Ohio; listed 1903-1914; succeeded by Votteler-Holtkamp-Sparling firm.

Staff: Henry H. Holtkamp; Allan G. Sparling; Charles Vandermoeller.

Sources:

• The Diapason December 1909 [no page number in Fox's Guide].
• The Diapason June 1926, 18.
• Piano and Organ Purchaser’s Guide, Purchaser’s Guide to the Music Industries, (New York: Music Trades).
• Elizabeth Towne Schmitt.
• The Tracker 35:2 (Richmond, Va.: Organ Historical Society, 1991), 23.