Copyright © 1998 State Historical Society of Iowa. This article is posted here for personal use, not for redistribution.
Finlay, Mark R. "System and Sales in the Heartland: a Manufacturing and Marketing History of the Hart-Parr Company, 1901-1929." The Annals of Iowa 57 (1998), 337-373.
Available at: http://ir.uiowa.edu/annals-of-iowa/vol57/iss4/3