The ad for Stewart's ran in 1949. The office supplies shop was at 824 Broad Ripple Avenue [H4 on map] at that time, although the ad says 818. According to the city directories, it was at 824 from 1949 to 1963, before moving a few doors west to 806/808. It is hard to tell which of the 818 and 824 addresses are correct. The 1950 Indianapolis phone book also lists the address as 824.