The Development of the Industrial United States (1870-1900)
- Alexander Graham Bell's Patent for the Telephone and Thomas Edison's Patent for the Electric Lamp
- Glidden's Patent Application for Barbed Wire
- The Homestead Act of 1862
- Little House in the Census: Almanzo and Laura Ingalls Wilder
- Maps of Indian Territory, the Dawes Act, and Will Rogers' Enrollment Case File
- Petition Signed by Thomas A. Edison for Sunday Openings at the World's Columbian Exposition
- Affidavit and Flyers from the Chinese Boycott Case
- Photographs of Lewis Hine: Documentation of Child Labor