Cattell, J. McKeen and Jaques Cattell, Biographical Directory of American Men of Science, re 7^th edition and biographical information form [pc], n.d.

Cattell, J. McKeen and Jaques Cattell, Biographical Directory of American Men of Science, re 7th edition and biographical information form [pc], n.d., Box: 1, Folder: 64. Robert R. Wilson papers, 14-22-3093. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/222536 Accessed July 15, 2025.