1. Western Regional Plant Introduction Station Washington State University Pullman WA 99164 U.S.A.
2. Aberdeen R&E Center University of Idaho 1693 S 2700 W Aberdeen ID 83210 U.S.A.
3. National Laboratory for Genetic Resources Preservation USDA, Agricultural Research Service 1111 S Mason St Fort Collins CO 80521 U.S.A.
4. Plant Germplasm Introduction and Testing Research Unit USDA, Agricultural Research Service 24106 N Bunn Road Prosser WA 99350 U.S.A.