Source: Notarized Declaration, Wabash Co. Partnership & Firm Record, Book 1, p. 15:
October 10, 1921. Oscar M. Larson and Mary A. Larson, being duly sworn on oath say that they are the sole owners and proprietors and constitute the sole members of a business conducted by them at 810 West Main Street in the town of North Manchester, Wabash County, State of Indiana, in the name of North Manchester Garage and Machine Shop, and as such are engaged in automobile repairing and machine work. And that they further certify that there is no other person connected with them in the conducting of said business who has a financial interest therein. That the only persons having an interest in said business are Oscar M. Larson and his mother Mary A. Larson, both of North Manchester, Indiana, and none others.