In doing research I came across the Cortland Apartments at 2nd and Locust.
They were built around 1929 and opened early 1930. It was touted as an "advanced idea in apartment residence. It held fifteen furnished apartment suites above and seven shops below.
Through the years it housed a number of businesses including dentists (see ad in slideshow). The Cortland Apartments were razed around 1968, and the site is still a parking lot.