Institution: | 1. Alaska Exp. Sta., Palmer, Alaska 2. Bur. Fruit and Veg. Standardization, Dept. Agr., Sacramento 14, Cal. 3. Plant Protection Division, Dept. of Agr., Science Service Bldg., Ottawa, Canada 4. Colo. A. & M. College, Fort Collins, Colo. 5. Delaware State Board of Agriculture, Dover, Del. 6. Idaho Crop Imprv. Assn., Inc., P. O. Box 2601, Boise, Idaho 7. Iowa Crop Imp. Assn., 112 Agronomy Bldg., Ames, Iowa 8. Division of Plant Industry, Dept of Agr., Augusta, Me. 9. Agr. Exp. Sta., Univ. of Maryland, College Park, Md. 10. Michigan Crop Imp. Assn., Michigan State College, E. Lansing, Mich. 11. Division of Plant Industry, Dept. of Agr., Univ. of Minn., St. Paul Campus, St. Paul 1, Minn. 12. Mont. State College, Bozeman, Mont. 13. Potato Seed Cert. Assn. of Nebr., P. O. Box 90, Alliance, Nebr. 14. Dept. of Agr., Concord, N. H. 15. Dept. of Agr., Trenton, N. J. 16. N. M. Crop Imp. Assn., P. O. Box 425, State College, N. M. 17. N. Y. State College of Agr., Ithaca, N. Y. 18. N. C. Crop Imp. Assn., Inc., State College Station, Raleigh, N. C. 19. College Station, Fargo, N. D. 20. Dept. of Agr., Wm. Yount, Bureau of Plant Industry, Harrisburg, Pa. 21. S. D. Potato Growers Assn., Watertown, S. D. 22. 410 State Office Bldg., Nashville, Tenn. 23. Division Plant Pest Control, Dept. Agr., Montpelier, Vt. 24. Virginia Crop Imp. Assn., Inc., Blacksburg, Va. 25. State Dept. of Agr., Bellingham, Wash. 26. Dept. of Plant Path., College of Agr., Madison 6, Wis. 27. College of Agr., Laramie, Wyo.
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