Charles River area builders

Charles River – area builders
So, who were they and when were they in business?
Below is a list of the ones I know of and there are likely several more. Please feel free to ad to and correct the list. The years shown in the list are the years the company is believed established and closed. Several of the companies started out and/or closed at other places than the Charles River area.

C. P. Nutting & Co.
Prospect St., Waltham, MA
1884 to sometime early 1940

J. R. Robertson Canoe Co.
Riverside, Auburndale, MA (former address Lawrence, MA; Potsdam, N.Y. and Canton, N.Y.)
1881 to 1940

H.V. Partelov & Co.
Riverside, Auburndale, MA (Head office in Boston and yard and factory at Marblehead)
1880 to ?
Charles Partelow
1884 to ?

George Stephenson
Riverside, Auburndale, MA (moved to Norway, Maine in 1893)
1890 to 1945

H.B Arnold
Crescent St. Waltham, MA
1897 to 1914
H. B. Arnold & Co.
1914 to 1942

Waltham Boat and Canoe Co.
Forest Grove, Waltham, MA (moved to Woerd Ave in 1900)
1895 to 1912

F. Brodbeck
Washington St. Boston, MA
1898 to 1930

Joseph B. Emerson
Riverside, Auburndale, MA
ca. 1898 to ?

Ted Shea
Foxborough, MA

H.E. Crandell
Worcester, MA
ca. 1900 to ?

Aden Kingsbury
Weston, MA
ca. 1913 to late 1940’s