erc: who: Sandefer, J. D., Jr. what: [Letter from J. D. Sandefer, Jr. to T. N. Carswell - March 21, 1951] when: 19510321 where: https://texashistory.unt.edu/ark:/67531/metapth1398853/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://texashistory.unt.edu/ark:/67531/