This photo shows one of the main causes of the Great Depression, the Dust Bowl. The Dust Bowl wiped out many of the crops in the Central Plains area, and forced farmers to move to the West Coast to find jobs.
Text Based Secondary Source: The farm workers who remained struggled to survive in desperate conditions. Bank foreclosures drove small farmers from their land, and large landholders cut back on their permanent workforce. As with many Southwestern farm families, a great number of Mexican American farmers discovered they had to take on a migratory existence and traveled the highways in search of work. MLA Citation - (Mexican - Depression and the Struggle for Survival - Immigration...- Classroom Presentation | Teacher Resources - Library of Congress)
This is a cartoon from around the time the New Deal was created. It shows how the US promised to change to help end the Great Depression.