Collection of Miscellaneous Facsimiles and Pictorial materials, MSP 131, Box: FF 6; Box: Communal Collections 51, Placement: 07; Box: Communal Collections 49, Placement: 10. Purdue University Archives and Special Collections. https://archivesdev.lib.purdue.edu/repositories/2/resources/641 Accessed June 12, 2024.
