This appears to be the right record: Old Town 150300 is an 18 foot AA (top) grade fully tricked-out Otca model canoe that was completed March-June of 1948, with red Western cedar planking, open mahogany gunwales, mahogany decks/thwarts/seats, half ribs, outside stems, mast seat and step, keel, floor rack, full length bang plate and an original dark green color. It was shipped to Hartford, Connecticut on August 15, 1949 but returned for credit September 9, 1949-- then revarnished and repainted and sold as new. No indication I can see of where it went next. Image of the scan of this record is attached below-- click on it to get a larger image.
This scan and several hundred thousand others 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/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 this description doesn't match your canoe. Feel free to reply here if you have any other questions.
Just to close the loop on this one, this fancy OTCA went home to its family on a freshwater pond on the Cape last weekend. Seven or so new ribs, minor planking, new mahogany outwales, new keel, major reconstruction of the rotted ends, new interior varnish, new canvas, filler, paint, seat cane and center thwart (#@!%#!!^^**(!!) yeah - that center thwart. Many thanks to Steve Lapey who helped with the keel, outwales, and installation of the outer stems since I had a critical shortage of time.
I believe the canoe has been in the same family since it was new in the late 1940's.