Welcome and congratulations, it appears that you may have the Old Town canoe with serial number 57548. (The length usually follows but occasionally leads the serial number.) This is a 17 foot long, CS (common sense or middle) grade, HW (heavy water) model with red western cedar planking, open spruce gunwales, maple decks, maple thwarts, maple seats, and a keel. It was built between November, 1919 and 1920. The original exterior paint color was maroon. It shipped on April 1st, 1920 to Toledo, Ohio. A scan of this build record can be found 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/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 possible that you could have another number or manufacturer if this description doesn't match your canoe, although that doesn't seem likely. Feel free to reply here if you have any other questions.
Benson