The Old Town canoe with serial number 137280 is an 18 foot long, AA (or top) grade, Otca model with open mahogany gunwales, mahogany decks, mahogany thwarts, mahogany seats, half ribs, a keel, and outside stems. It was built between March and July, 1943. The original exterior paint design was similar to the image shown at
http://www.wcha.org/catalogs/old-town/designs/design10.gif which was known as design number ten. It shipped on July 22nd, 1943 to Wichita, Kansas. A scan of 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 as you probably know well. 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
https://www.woodencanoe.org/pricing-plans/join to donate or renew.
It is also possible that you could have another number or manufacturer this description doesn't match the canoe. Feel free to reply here if you have any other questions.
Benson