Welcome, the Old Town canoe with serial number 190339 is a 16 foot long fiberglass Carleton model with a keel that weighed 81 pounds. It was built in June, 1972. The original exterior gelcoat color was yellow. It shipped on June 20th, 1972 to Whitney Point, New York. 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 contribute, 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,