1910 Kennebec Sponson Canoe
There is a discussion of this canoe at:
http://forums.wcha.org/showthread.php?t=3663&highlight=kennebec+morris
Note that in the build information, the stem is described as "ced" (for cedar). As Kennebec-built canoes don't have cedar stems, it can be speculated that the canoes listed as having cedar stems began at the Morris factory.
It seems that Kennebec didn't document the wood species of the stem for all their canoes over the years, or we might be able to count the number of hulls that may have come from Morris. We might, then, have been able to tie Kennebec's need for Morris hulls to periods of booming business, or whatever. In the case of this canoe, 1910 was the first year for Kennebec and perhaps demand was greater than supply and they turned to Morris for help.
Note Dave's comment in the previous discussion that the sponsons on this canoe appear to be Morris sponsons and not they type Kennebec put on their canoes.
I'll continue this reply with more pictures...