Welcome, the Old Town with serial number 20080 is 16 feet long os that isn't a good match. My guess is that you may actually have the Carleton canoe with that number This is an 18 foot long, regular (or middle) grade, Carleton model with red western cedar planking, open spruce gunwales, birch decks, birch thwarts, birch seats, and a keel. It was built between December, 1930 and March, 1931. The original exterior paint color was dark green. It shipped on April 9th, 1931 to Philadelphia, Pennsylvania. 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. 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 the canoe. Feel free to reply here if you have any other questions.
Benson