![The American Memory Project](https://d3h6k4kfl8m9p0.cloudfront.net/web-resources/the-american-memory-project.jpg)
The American Memory Project
This amazing Library of Congress site includes about a hundred photo and document collections (see complete list) on topics ranging from baseball cards to WPA posters to railroad maps to Coca-Cola advertising to sheet music. Most are browsable by subject and also keyword searchable.