Sinclair, Upton to Henry J. Haldeman, January - September 1962

Sinclair, Upton to Henry J. Haldeman, January - September 1962, Box: 1, Folder: 8. Upton Sinclair Literary Manuscript and Correspondence, MS 299. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/238394 Accessed December 24, 2025.