Power Mercantile Co., Lewistown, Montana ID: 1182 | This file appears in: Power Mercantile Building Power Mercantile Building; Located at 302 W. Main and was built in 1901 by the Power Mercantile Co. The Power Mercantile Co. was started by T.C. Power when he bought out Francis Janeaux's Trading Post in 1883. This was the 3rd building called Power Mercantile. | Creator: Unidentified photographer | Date: 1950 | Source: Montana History Portal | Rights: Copyright Lewistown Public Library Download Original File CreatorUnidentified photographerSourceMontana History Portal Date1950RightsCopyright Lewistown Public Library "Power Mercantile Co., Lewistown, Montana" appears in: Power Mercantile Building