Rob:
The Old Town canoe with serial number 51309 is an 18' foot long, CS (Common Sense or middle) grade, “Otca” model with open spruce gunwales, and birch decks, thwarts and seats. It was built between Dec. 31, 1917 and 18 Mar. 1918. The original exterior paint color was bright red. It shipped on 20 March 1918, to Gordon - Brent Co., Green Bay, WI.
The scan of this build record can be found by following the link at the attached thumbnail image below. The build card makes no reference to sailing gear, although it does suggest that two back rests and two spruce paddles were included.
The microfilms and scans of these records were created with substantial grants from the Wooden Canoe Heritage Association (WCHA) as you probably know well. See
http://www.wcha.org/wcha/ to learn more about the WCHA and
http://www.wcha.org/join.php to join.
It is also possible that you could have another number or manufacturer if these descriptions don't match your canoe. Feel free to reply here if you have any other questions