The Old Town canoe with serial number 117890 is a 17 foot long, AA (or top) grade, Otca model with red western cedar planking, open mahogany gunwales, mahogany thwarts, mahogany seats, a keel, outside stems, a floor rack, sponsons, a mast seat, and a mast step. It was built between May, 1936 and October, 1937. The original exterior paint colors were similar to the ones shown at
http://www.wcha.org/catalogs/old-town/designs/design37.gif which was known as the design number 37. It shipped on November 1st, 1937 to Valley Falls, Rhode Island. A scan of this build record can be found by following the link at the attached thumbnail image below.
This scan and several hundred thousand others 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/ot_records/ if you want more details. I hope that you will join or renew your membership to the WCHA so that services like this can continue. See
http://www.wcha.org/about-the-wcha/ to learn more about the WCHA and
http://store.wcha.org/WCHA-New-Membership.html to renew.
It is also possible that they could have another number or manufacturer if this description don't match your canoe. Feel free to reply here if you have any other questions.
Benson