1. Karikka, K. G., Dudgeon, L. T., and Hauck, H. M. 1944. Influence of variety, location, fertilizer, and storage on the ascorbic acid content of potatoes grown in New York State. Jour. Agr. Res. 68: 49–63.
2. Lampitt, L. H., Baker, L. C., and Parkinson, T. L. 1945. Vitamin C content of potatoes. I. Distribution in the potato plant. 2. The effect of variety, soil, and storage. Jour. Soc. Chem. Indust. 64: 18–22; 22–26.
3. Murphy, E. F., Dove, W. F., and Akeley, R. V. 1945. Observations on genetic, physiological, and environmental factors affecting the vitamin C content of Maine-grown potatoes. Amer. Potato Jour. 22: 62–83.
4. Nelson, W. L., and Somers, G. F. 1945. Determination of ascorbic acid. Application of the indophenol xylene extraction method to determination in large numbers of tomato and tomato juice samples. Ind. Eng. Chem., Anal. Ed. 17: 754–56.
5. Smith, A. M., and Gillies, J. 1940. The distribution and concentration of ascorbic acid in the potato (Solamim tuberosvm). Biochem. Jour. 34: 1312–20.