This document contains information about two primary sources and two secondary sources related to the Dust Bowl and Great Depression era. The primary sources are the photograph "Migrant Mother" by Dorothea Lange, and a book by Lange called "Dorothea Lange: The Crucial Years, 1930-1946". The secondary sources are a Library of Congress page about a home in Oregon during the Dust Bowl, and an Illinois library page about the book on Lange's photography career. The secondary sources help provide context and interpretation for the primary sources by offering background on the time period and subjects depicted over 50 years later.