Now I think that we have found the correct record. The Old Town canoe with serial number 135766 is a 16 foot long, AA (or top) grade, HW (Heavy Water) model with open mahogany gunwales, mahogany decks, mahogany thwarts, mahogany seats, a keel, a floor rack, and sponsons. It was built between July and September, 1942. The original exterior paint color was dark green. It shipped on March 25th, 1943 to Tulsa, Okla. A scan of this build record can be found by following the link at the attached thumbnail image below.
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.
Benson