Benson, thanks for your quick response, but I think I gave you a bum steer. The boat described in the build record is clearly not the one we have. On closer inspection of the stems it appears that the serial number (which is not easy to make out) is actually either 26501 or 126501. (The initial "1" is very faint, to the point of being imaginary.) However, the later build would make more sense, considering some of the details. The boat we have is a sixteen-footer, with mahogany rails and a sailing rig, at least at this point in its life. Can you see if 126501 is a likely fit? Thanks a lot.
Don in Vermont