Harvest Gypsies - Further Reading
Fensch, Thomas. "John Steinbeck: The Journalistic Background of 'The Grapes of Wrath'." The Eye of the Reporter: Literature's Heritage in the Press. Essays in Literature. Macomb: Western Illinois UP, 1996. 69-80.
Houston, James D. "Steinbeck's Obsession: A Novel Born in Pain." Rev. of The Harvest Gypsies; Working Days: The Journals of 'The Grapes of Wrath', ed. Robert DeMott. San Francisco Review of Books Spring 1989: 25-26.
Shillinglaw, Susan. [untitled]. Rev. of The Harvest Gypsies: On the Road to The Grapes of Wrath. Introduction by Charles Wollenberg. Steinbeck Newsletter 2.1 (Fall 1988): 11.
Baumhardt, Louis R. "Dust Bowl Era". United States Department of Agriculture (USDA). Bushland, Texas.
"Dust Bowl," a brief video by The History Channel.