Smalley, W. R. Saxton Plutonium Project. Quarterly Progress Report for Period Ending March 31, 1970., report, January 1, 1970; (https://digital.library.unt.edu/ark:/67531/metadc866971/m1/1/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .