Edmundson, W. C. (Wilbur Clifford), 1888-; Schaal, L. A. (Lawrence Arthur), 1900- & Landis, B. J. (Birely J.), 1904-. Potato growing in the western states., book, November 1951; (https://digital.library.unt.edu/ark:/67531/metadc3380/m1/1/: accessed February 17, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .