Congratulations, the Old Town with serial number 33901 is a 17 foot long, AA (or top) grade, HW model with red western cedar planking, open mahogany gunwales, mahogany decks, mahogany thwarts, mahogany seats, half ribs, a keel, and a floor rack. It was built between August, 1914 and May, 1915. The original exterior paint color was black. It shipped on June 15th, 1915 to Bridgewater, New Hampshire. A scan of this build record can be found by following the link 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 donate, join or renew your membership to the WCHA so that services like this can continue. See
https://www.woodencanoe.org/about to learn more about the WCHA and
https://www.woodencanoe.org/shop to donate or join.
It is also possible that you could have another number or manufacturer if this description doesn't match. Page 12 of the 1915 Old Town catalog at
https://www.woodencanoe.org/_files/ugd/537308_25470a3cd6c0401c81a25ef26202555c.pdf has more details. Let me know if you have other questions or if there is anything else that I can do to help.
Benson