Congratulations, the Old Town canoe with serial number 127957 is a 13 foot long, AA (or top) grade, fifty pound model with a keel, a floor rack, thwarts in place of seats, and number eight canvas. It was built between June and July, 1939. The original exterior paint color was dark green. It shipped on July 10th, 1939 to Stony Creek, New York.
The Old Town canoe with serial number 153715 is a 15 foot long, CS (Common Sense or middle) grade, fifty pound model with white Maine cedar planking, open spruce gunwales, and a keel. It was built between January and May, 1950. The original exterior paint color was bright red. It shipped on June 22nd, 1950 to Cheshire, Massachusetts. A scan showing these build records 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 as you probably know well. 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 renew.
It is possible that you could have another number or manufacturer if these descriptions don't match your canoes. Feel free to reply here if you have any other questions.
Benson