That's awesome. I'm with Jack, old flathead leaker. Growing up in the area I remember well the downtown Pittsburgh cops running around on the old Servicars handing out parking tickets. Always had a fondness for those - especially the ones that sold ice cream bars.
What if the Hokey-Pokey really is what it's all about?
That's great you have a pictures of your grand pappy on a bike. Mine told me about the Indians and Harley's he owned from the 30s to the 60s and all the adventures he had. Nobody ever took a picture of him on a bike though.