Welcome and congratulations, the Old Town with serial number 151917 is a 16 foot long, CS (Common Sense or middle) grade, square stern model with red western cedar planking, open spruce gunwales, a keel, outside stems, and a floor rack. It was built between November, 1948 and March, 1949. The exterior paint color was dark green with a G.S. (Guide's Special or lighter) green bottom. It was shipped on April 12th, 1949 to Caribou, Maine. A scan showing this build record can be found below.
This scan and several hundred thousand more were created with substantial grants from the Wooden Canoe Heritage Association (WCHA) and others. A description of the project to preserve these records is available at
http://www.wcha.org/catalogs/old-town/records/ if you want more details. I hope that you will donate, join or renew your membership to the WCHA so that services like this can continue. See
http://www.wcha.org/about-wcha to learn more about the WCHA and
http://www.wcha.org/store/membership to join.
It is also possible that you could have another number or manufacturer this description doesn't match. Feel free to reply if you have any other questions. Good luck with the restoration,
Benson