Please also consider giving the SPPA a look. They also have a list of rare and endangered poultry breeds. For a yearly membership fee of $15.00 you can get their breeder's list and publications.
Society for the Preservation of Poultry Antiquities
http://www.feathersite.com/Poultry/SPPA/SPPA.html
Society for the Preservation of Poultry Antiquities
http://www.feathersite.com/Poultry/SPPA/SPPA.html