There are no plans available for Old Town Canoes. However, restoring the bow and stern tips is a fairly common restoration job, and information about how to do it is available.
In addition to asking questions here on the forums (and using the search function to research older discussions of stem repair/restoration), there are three good sources of information about canoe restoration which you would do well to get, or at least look at -- "The Wood and Canvas Canoe: A Complete Guide to its History, Construction, Restoration, and Maintenance" by Rollin Thurlow and Jerry Stelmok, and/or "Building the Maine Guide Canoe" by Jerry Stelmok, and "The Old Town Canoe Company" by Susan Audette and David Baker.
The first is often called the "bible" of canoe repair, restoration, and maintenance; the second is an excellent study of the wooden/canvas canoe and its construction, and the third is a great history of the company and its canoes. These are available from the WCHA store, are often on eBay, or from Amazon. “The Wood and Canvas Canoe” is currently out of print, and so can be hard to get. I am told that Jerry Stelmok has some copies for sale: Island Falls Canoe Company, Atkinson, ME. Email:
Islfalls@IslandFallsCanoe.com
Also, your library may have the book, and if not, should be able to get it through the interlibrary loan service.
The WCHA online store also has a collection of magazine article reprints on rebuilding/restoring canoes -- “Rebuilding the Wood & Canvas Canoe” -- for $3 --
http://store.wcha.org/Rebuilding-the-Wood-and-Canvas-Canoe.html This is well worth $3 -- the information is not as detailed as in the books above, but is accurate and can be a good starting point.
Greg