American Dairy Associations
The American Guernsey Association
The American Jersey Association
PENNSYLVANIA GUERNSEY BREEDERS ASSOC. WISCONSIN GUERNSEY BREEDERS ASSOC.
NEW YORK GUERNSEY BREEDERS
IOWA GUERNSEY BREEDERS ASSOC.
CALIFORNIA GUERNSEY BREEDERS
MARYLAND GUERNSEY BREEDERS ASSOC.