All-Natural Pork (raised without antibiotics, hormones or growth stimulants):
Beeler's Pork Products
(712) 546-4402, beelerspurepork.com
Heritage Foods USA
(212) 980-6603, heritagefoodsusa.com
Not breed-specific, but raised on family farms and allowed to wander outside.
(866) 808-0340, nimanranch.com
Prairie Grove Farms
Not breed-specific, but good quality and lean.
(815) 754-0880, prairiegrovefarms.com
Vande Rose Farms
Iowa Duroc Heritage Breed Pork. Also raised on sustainable family farms.
(800) 397-6328, vanderosefarms.com
Organic (raised like all-natural but fed only organic grains and soybeans):
Diamond Organics (888) 674-2642, diamondorganics.com
Organic Valley (888) 444-6455, organicvalley.com