Exner, Frank, Columbia University, from R.R.W., re radiological use of fast protons [cc]; reply, 12/17/1947 [tls], 11/21/1947

Exner, Frank, Columbia University, from R.R.W., re radiological use of fast protons [cc]; reply, 12/17/1947 [tls], 11/21/1947, Box: 1, Folder: 100. Robert R. Wilson papers, 14-22-3093. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/222900 Accessed July 21, 2025.