'Prosperity and Thrift: The Coolidge Era and the Consumer Economy, 1921-1929' assembles a wide array of Library of Congress source materials from the 1920s that document the widespread prosperity of the Coolidge years, the nation's transition to a mass consumer economy, and the role of government in this transition. The collection includes nearly 150 selections from twelve collections of personal papers and two collections of institutional papers from the Manuscript Division; 74 books, pamphlets, and legislative documents from the General Collections, along with selections from 34 consumer and trade journals; 185 photographs from the Prints and Photographs Division and the Manuscript Division; and 5 short films and 7 audio selections of Coolidge speeches from the Motion Picture, Broadcasting, and Recorded Sound Division. The collection is particularly strong in advertising and mass-marketing materials and will be of special interest to those seeking to understand economic and political forces at work in the 1920s.