Wu, C[hien]-S[hiung], University of California [Berkeley], to R.R.W., re silver counters used in lab at Princeton, request for diagrams of tubing coating and connections of tungsten leads to coating or loan spare counter [als], 7/2/1941, Box: 4, Folder: 38. Robert R. Wilson papers, 14-22-3093. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/225400 Accessed April 12, 2026.