I'll try to clarify a little, even though it is late and I've been away all weekend.
H. P. Bartlett and E. M. Illingsworth started a canoe livery in 1893. (Bartlett had worked for C. P. Nuttings father). Around 1901 they formed the Waltham Boat and Canoe Company, buying into/taking over Robertson & Perry (Charles B. Robertson was nephew of J. R. Robertson).
The business was sold to James Burgin in 1903. Burgin had worked for C. P. Nutting for six years prior. About this time, both Robertson and Perry go to work for J. R. Robertson.
In 1906, Burgin sold the canoe manufacturing part of the business back to Bartlett, retaining the livery part of the business.
Waltham Boat and Canoe burned down June 27, 1912.
Woerd Ave. Boat House is listed as a livery 1910-1915 and as a canoe builder 1917-1923.