If you look at any ole' Old Town canoe, you'll see the inner stem is thin and uniform, coming to an abrupt end. In a Willits, on the other hand, every edge is slightly rounded, and the inner stem is splayed, slightly widening as it enters the boat.
Willits No. 765 and No. 813, from 1949 and 1951, respectively. 765 has been completely restored to a lustrous sheen, while 813 retains its 60 year old varnish (plus many additional layers which have begun peeling away over the years).