All I have is:  Info from Gellerman's International Reed Organ Atlas.
(Robert F. Gellerman, Vestal Press)

E. B. Carpenter 1850.  Jacob Estey bought out Riley Burditt who with
Carpenter became E. B. Carpenter and Co. 1852; later became Carpenter,
Jones, And Woods; still later sold out to Estey again.

Company then moved to Mendota, IL in partnership with C. W. Tewksbury.
In 1865 became Tewksbury and Carpenter, located on Washington and main
Streets Mendota, Ill.  In 1866 company moved to the Dawson Building.
1868 Eaken Smith and Able Hoffman joined to form T/C and Co. located on
6th and 11th ave.

Tewksbury pulled out in 1873, name changed to Carpenter, Scott, and
Wise.  1875 name changed to Western Cottage Organ Co.  At this time
Carpenter sold his interests in the first company.  Started building
organs again under the name of E. B. Carpenter Mendota, Ill 1876-1882.
Later renamed Carpenter Organ Co.  Later still Mendota, Northwestern,
Cottage Organ and Piano Co. in 1887.  In 1889 Carpenter closed the
plant and returned to Vermont and passed on there in 1891.

After some dubious business beginnings, E. P. Carpenter, son of E. B.,
opened a business in Brattleboro in 1884.  Operated at least through
1899.

W. E. Carpenter general manager in 1894.  Later on E. P. Carpenter was
a music judge for the World's Columbian Musical Faire Exhibition in 1895.
Organs were built through about 1917.

Serial Numbers ran as follows:

 1895 was   95000
 1898 was   98000
 1899 was  100000
 1902 was  103000
 1903 was  105000
 1906 was  110000
 1908 was  115000
 1909 was  116000
 1910/1911 117000
 1912 was  119000
 1917 was  126000

Tom DeLay