I'm not sure what you have. The deck shape isn't very distinctive. The Kennebec record for serial number 16461 shows a 17 foot long canoe from 1922, the Old Town one shows an 18 foot long canoe from 1911, and the Carleton one shows a 16 foot long canoe with open gunwales and a floor rack that was converted to an Old Town which before being shipped to Pennsylvania in 1922. None of these are a good match for the canoe in your pictures. Not many builders issued serial numbers in this range so it is hard to say who might have made it. Please reply here if you ever figure it out.
Benson