1. Munch, Neal. 1946. Weekly potato yield increases. Hints to Potato Growers 27: 1.
2. —. 1946. Weekly yield increases of potatoes. Hints to Potato Growers 27: 7.
3. —. 1948. Weekly potato yield increases—1947. Hints to Potato Growers 29: 3.
4. Terman, G. L., C. E. Cunningham, Michael Goven, Edgar Lord. 1951. Effect of harvest dates on yield, specific gravity and quality of potatoes. Me. Agr. Exp. Sta. Bull. 491.