Thanks all, for the nice comments!
CountBogro and Playmofire, I did some research on the "seaplane" title. It seems, so they say, that floatplanes, and flyingboats, are both seaplanes.
I didn't give it much thought before though. I was an aircrewman in the U.S.Navy during the sixties for a short time. (Vietnam) I was in a land based patrol aircraft, but the neighbor squadron flew the big P5M flyingboat. We called them seaplanes. The U.S.N. also had seaplane tenders ...large ships that serviced the seaplanes at sea.
Dan..I think I can get more photos. My boy has the plane. I was an aircraft mechanic in the Navy, as was your Dad! Neat stuff!