Primary
US National Archives

National Archives and Records Administration: Founders Online

For Students 9th - 10th
This site provides the texts of nearly 200,000 historical documents related to six Founding Fathers, including the papers of George Washington, Benjamin Franklin, John Adams, Thomas Jefferson, Alexander Hamilton, and James Madison. The...
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Duke University

Hartman Center: Emergence of Advertising in America

For Students 9th - 10th
The Emergence of Advertising in America: 1850-1920 (EAA) presents over 9,000 images, with database information, relating to the early history of advertising in the United States.