Working Horse Breeds
- American Cream Draft Horse Association
- American Donkey & Mule Society
- American Donkey Association
- American Haflinger Registry
- American Mammoth Jackstock Registry
- American POSM Horse Association
- American Shire Horse Association
- American Suffolk Horse Association
- Belgian Draft Horse Corporation of America
- Carbery Estate Stud-Percheron, Belgian & Mule Stud
- Clydesdale Breeders of the USA
- Hertfordshire Heave Horse Association
- North American Spotted Draft Horse Association
- Norwegian Fjord Horse Registry
- Percheron Horse Association of America
- Redbank Percherons
- Suffolk Punch
- Western Haflinger Association
Oxen Information & Supplies
Horse & Mule Logging
Rare Breeds of Livestock
Sustainable, Organic or Biodynamic Farming
- ALHFAM – The Association for Living History, Farm and Agricultural Museums
- American Grassfed Association
- Baker Creek Heirloom Seeds
- Biodynamic Farming and Gardening Association
- Center For Rural Affairs
- Farm & Garden Services
- Microfarm Sustainable Research and Education
- Organic Gardening
- Sustainable Farming Connection
- The Kerr Center for Sustainable Agriculture
- Victory Seed Company
Other Sources of Books and Information
Sites for Equipment & Harness
Other Sites of Interest
International Sites of Interest
- Cart Horse Machinery (Wales)
- Development Technology Unit, School of Engineering, University of Warwick, Coventry, UK
(source for utility cart (ox or donkey) building plans) - PferdeStark
- Starke Pferde magazine (Germany – site is in German)
- Univecus-system tool holder for draft animals (Germany/Switzerland)
- Westfalen Open Air Museum at Detmold
International Event with Heavy Horses (this site is in German)