1. Gates, C. E. 1952. A statistical genetic investigation in Irish potatoes,Solanum tuberosum. M.S. thesis, North Carolina State College.
2. Krantz, F. A. and R. M. Bailey. 1929. Relative productivity of certain types of potato seedling populations. Proc. Potato Assoc. of Am. 56–63.
3. Krantz, F. A. and A. E. Hutchins. 1929. Potato Breeding Methods II. Selection in inbred lines. Minnesota Agr. Expt. Sta. Tech. Bull. 58.
4. Sanford, L. L. 1960. Comparative evaluation of clones as testers for yield, specific gravity and tuber appearance in the potato. Ph.D. thesis Iowa State University.
5. Yang, H. T. 1939. Correlation between reaction of seedling families of potatoes in the greenhouse and in the field. M.S. thesis, University of Minnesota.