The Old Town canoe with serial number 171313 is an 18 foot long, Guide model with a keel. It was built between August and September, 1961. The exterior paint color was pale blue. It was shipped on September 11th, 1961 to Charleston, North Carolina. The back side of the card shows that it had probably moved to Minnesota by June 24th, 1972 and February 16th, 1982 when there were two previous requests for a copy of this build record information. Scans showing both sides of this build record can be found by following the links at the attached thumbnail images below.
These scans 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/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/wcha/ to learn more about the WCHA and http://www.wcha.org/join.php to join.
It is also possible that they 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.