Employees of the John Etrl Baking Company at 333 First Avenue in downtown Pittsburgh. John Ertl is standing on the far left.
John Ertl was the president of the Ertl Baking Company, which provided wholesale baking goods to hotels, restaurants, and individual residences. It was located at 333 First Avenue until the mid-1920s, when it moved to a much larger facility at 924-932 Second Avenue. It continued operating at that location until the early 1950s.