- Leite
- National Association of Animal Breeders - NAAB
- Holstein Association USA
- Holstein Association of Canada
- Ontario Holstein Association
- American Jersey Cattle Association
- Jersey Canada
- Danish Jersey Cattle Society
- American Gelbvieh Association
- American Guernsey Association
- Ayrshire Breeders Association
- Brown Swiss Cattle Breeders Association
- Canadian Association of Animal Breeders
- Corte
- American Angus Association
- Red Angus Association of America
- International Brangus Breeders Association - IBBA
- American Hereford Association
- American-International Charolais Association
- American Simmental Association
- Brahman Association
- American Beefalo Association
- American Chianina Association
- American Shorthorn Association
- Santa Gertrudis Breeders International
- North American Limousin Foundation
- Agriculture Online
- Brangus World Internet Cattle Magazine
- Dairy Herd Management
- Dairy Library
- Hoard's Dairyman
- Holstein World
- Dairy Business Communications
- Blue Book - We obtain the top 5000 cows for CTPI and the top 5000 heifers for PTPI in files from Holstein USA and then conduct different sorts of the lists to generate what is included in the printed book.
- Lechero Latino
- Midwest Dairy Business
- Northeasr Dairy Business
- Western Dairyman
- Agridata - Sistema de Informações do Agribusiness de Minas Gerais - BR
- Bull Semen - UK
- Canadian Dairy Network's Industry
- Cornell Test Day Model AI Bull Census
- FarmNet
- NCIE Home Page
- Web MGI
- Yahoo Agriculture
- E-Campo