1. Diary and Letters of Josiah Gregg Univ. of Oklahoma Press Norman, Okla
2. Hale , W. E. Hughes , L. S. Cox , E. R. Possible Improvement of Quality of Water of the Pecos River by Diversion of Brine Report of Pecos River Commission 1954
3. Geochemical Relationships of Water in the Powder River Basin, Wyoming and Montana;Swenson;Trans. Am. Geophys. Union,1953
4. Effect of Irrigation Runoff on Surface Water Supplies;Cunningham;Jour. AWWA,1953
5. Durum , W. H. Progress Report of Chemical Quality of the Surface Waters in the Saline River Basin, Kansas US Dept. of the Interior Washington, D.C.