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My dad and I had a new 18' Fleetwood skiff built by Fred Garrison in Princes Bay about 1957. Paid $900.00 then and painted (finished) it ourselves. Put in all hardware and used long shaft 30 HP Evinrude bought new year end. That's how I know when Fred built boat '56 was only year for 30 HP Evinrude.
Please correspond. I can probably offer more for your data collection.