http://www.sheepusa.org/             American Sheep Industry Association

http://www.ansi.okstate.edu/breeds/sheep/dorper/index.htm       OSU Breeds of livestock, sheep and Dorpers

http://www.dorper.com.au/             Dorper Sheep Breeders’ Society of Australia, Inc.

http://www.dorper.com/index.html         Dolf Lategans’ Dorper Sheep Page

http://www.americanlambboard.org/      American Lamb Board

http://www.attra.org/       National Sustainable Agriculture Information Service

http://www.tahc.state.tx.us/      Texas Animal Health Commission

http://ag.ansc.purdue.edu/sheep/articles/index.html      Purdue University Sheep Extension

http://stephenville.tamu.edu/taes.html       Texas Agricultural Experiment Station

http://www.genecheck.com/       Gene Check, Inc.