Welcome, the Old Town canoe with serial number 135737 is an 18 foot long, AA (or top) grade, guide model with open mahogany gunwales, mahogany decks, mahogany thwarts, mahogany seats, half ribs, a keel, and outside stems. It was built between June, 1942 and June, 1943. The original exterior paint color was olive drab to match a sample that was provided. It shipped on June 26th, 1943 to Medford, Wisconsin. A scan showing this build record can be found by following the link at the attached thumbnail image 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 if this description doesn't match your canoe. Feel free to reply here if you have any other questions.
Benson