Interpreting Primary Sources: Controversies of the 1920s Recommended lesson plan: 1920s Consumer Culture http://history.osu.edu/projects/hti/Lessons/1920sconsumercult.htm Fact Check: Quiz on the 1920s Primary source documents with classroom questions: Excerpt from Chapter XIV of Babbitt, by Sinclair Lewis William Jennings Bryan's Last SpeechPresident Warren G. Harding Visits Yellowstone National Park Timelines: A timeline of the 20th century