The Old Town canoe with serial number 191085 is an 18 foot long Chipewyan model that weighed 88 pounds. It was built between July and August, 1972. The original exterior color was dark green. It shipped on March 13th, 1973 to Newbury, Mass. A scan showing this build record can be found 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 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.