I may have the record. Old Town 130418 is an 18 foot CS (common sense or middle) grade Paddling model canoe that was completed June 1940 to July 1941. It has open spruce gunwales, half ribs, a keel and outside stems. Original color was dark green. It was shipped to Portland, Maine, on July 9, 1941.
A scan of this build record can be found by following the link behind the thumbnail image attached 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/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/about-the-wcha/ to learn more about the WCHA and
http://store.wcha.org/WCHA-New-Membership.html 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.
Kathy