Take a look at one or more of the following:

Chamber Stoves Website ( Todd White )
http://www.chamberstoves.net/

Antique Stoves.com http://www.antiquestoves.com/chambers.htm

http://www.antiquestove.com/chambers.html

Hugh's Place http://www.hughsplace.com/parts.htm

Specializing in Chambers stove restoration:

Macy's Texas Stoveworks. http://www.macystexasstoveworks.com/adidas Yeezy 350