The Development of the Industrial United States (1870-1900)
![Detail of Electric Lamp Patent Drawing](https://webarchive.library.unt.edu/web/20120915215345im_/http://www.archives.gov/education/lessons/telephone-light-patents/images/light-drawing-detail.gif)
Alexander Graham Bell's Patent for the Telephone and Thomas Edison's Patent for the Electric Lamp
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
More Online Primary Source Resources for Era 6 -- The Development of the Industrial United States
PDF files require the free Adobe Reader.
More information on Adobe Acrobat PDF files is available on our Accessibility page.