Welcome and congratulations, the Old Town canoe with serial number 45859 is an 18 foot long, GS (Guide Special or utility) grade, IF (Indian fishing) model with red western cedar planking, closed spruce gunwales, short ash decks, ash thwarts, ash seats, a keel, and a floor rack. It was built between October, 1916 and January, 1917. The original exterior paint color was slate or auto (gray). It shipped on March 13th, 1917 to Kansas City, Missouri. If you really have a 17 foot long canoe then my guess is that it is the one with serial number 45889. This is an Otca model with red western cedar planking, open spruce gunwales, long maple decks, maple thwarts, maple seats, half ribs, a keel, outside stems, and a bang plate along the full length of the keel. It was built between October, 1916 and March, 1917. The original exterior paint color was bright red with a two inch pointed black stripe edged in gold. This may have looked similar to the one at
http://www.wcha.org/catalogs/old-town/designs/design34.gif with different colors. It shipped on March 31st, 1917 to Harrisburg, Penna. Scans showing both of 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. 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 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 neither of these descriptions don't match. There is no mention of a sail rig on either build record so that may have been added after it first left the factory. I would encourage you to measure the extreme overall length of your canoe in a straight line and attach some pictures of the serial numbers and surrounding area from each end here. Feel free to reply if you have any other questions. Good luck with the restoration,
Benson