Upton Sinclair Correspondence Collection. SHSU Special Collections, Newton Gresham Library, Sam Houston State University, Huntsville, Texas.
Upton Sinclair Correspondence Collection. SHSU Special Collections, Newton Gresham Library, Sam Houston State University, Huntsville, Texas. https://archivesspace.shsu.edu/repositories/2/resources/170 Accessed May 15, 2024.