Hi Sam.
Looks like quite the project boat. I've followed your Chestnut Playmate restoration over on SOTP with much interest (I have one too).
Ken Brown's book,
The Canadian Canoe Company and the Early Peterborough Canoe Factories (ISBN-10: 0978436849), might have some answers although there really is no listing of wide board models. The catalog he replicated in the book (in very small font) only lists the cedar canvas models that appears after merging with Peterborough & Chestnut in the 1920s.
However, he does mention the founder of The Canadian Canoe Co (CCC) was a Mr. Arthur Tebb who worked with J.Z. Rogers, founder of the Ontario Canoe Company (OCC). The OCC had acquired John Stephenson's patent for the Wide Board basswood canoe and begun factory production. According to the author, Tebb would've been very familiar with construction of this labour intensive style of canoe. After fire destroyed the Ontario Canoe Co in 1892, Rogers become manager of the newly formed Peterborough Canoe Company (PCC) and Tebb went out on his own to found the CCC.
The book shows examples of how Tebb basically "borrowed" all the designs and sketches from the Ontario Canoe Company for his 1st catalogue. It stands to reason that a 16' CCC boat was virtually the same as what was being built at the OCC and PCC. The standard 16 foot model was the #64
Here's a pic obtained from the 1921 catalog from
this thread on the wooden boat forums...
If you can find it, another book from 2005,
The Canoe: a Living Tradition by John Jennings (isbn 1-55407-080-5) might be useful too. The author commissioned a wide board and batten basswood canoe from the last living Peterborough area builder who would've been familiar with the construction method - Walter Walker. The photo sequence is pretty short but it might contain some more visual details for you.
Good luck!