Again, you astound me with your work and sharing great old photos of Corktown! Thank you so much. Ellen Abraham was my gr gr grandmother. Her son Leo Abraham was in business with my gr.grandfather Charles Ritter, he owned an auto trimming business. I found ads in the old city directories. Ritter Mfg. Co. [[general contractors to the auto trade)1903-1914 and then Wolverine Garage Co. at 248 Jefferson Ave. E. [[1915-1917), later going into real estate. I've had to find this on my own as my immediate family had NOTHING on my father's side [[Ritter). Great fun and exciting to see what you have come up with also!