Nisley, Paul H., A. D. Mackay, to R.R.W., Princeton University, re Yttrium concentrate and Dysprosium [tls], price list attached [pi], 8/4/1941

Nisley, Paul H., A. D. Mackay, to R.R.W., Princeton University, re Yttrium concentrate and Dysprosium [tls], price list attached [pi], 8/4/1941, Box: 3, Folder: 28. Robert R. Wilson papers, 14-22-3093. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/224155 Accessed July 22, 2025.