Source: Aurora (1913) Ad:

WE SELL 'EM (THE RANGES)
Also Everything in Hardware
NAFTZGER & CO.
North Manchester, Ind.

Source: Aurora (1921) Ad:

THE QUALITY STORE
Headquarters for Hotpoint Electrical Goods, Chinamel, Varnish for Every Purpose,
Tires, Bicycles, and Every Thing in Hardware
NAFTZGER'S

Source: Notarized Declaration, Wabash County Partnership & Firm Record, Book 1, p. 18:

November 22, 1921. The undersigned do hereby certify that we are conducting a hardware business at North Manchester Indiana under the fictitious firm name of Naftzger & Company and that said firm is composed of the following persons, whose names and addresses are as follows. Frederick E. Naftzger, residence, 1180 W. 28 St., city of Los Angeles, County of Los Angeles, State of California, and Robert M. Weed, residence 1180 West 28 St., City of Los Angeles, County of Los Angeles, State of California.