The Authoritative Guide to Online Primary Sources

United States

Docs Teach (National Archive)
Resources for teachers that want to teach with documents (primary sources).

Gilder Lehrman Collection
Free registration for K-12 teachers and K-12 students.

Library of Congress
Digital resources from the world’s largest library.

National Archives
Incredible collection of archives surrounding key topics and moments in U.S. History.  Also presents a significant amount of Presidential History.

Smithsonian Learning Lab
Millions of Smithsonian Resources Indexed.

Yale University
A large collection of United States and global primary sources.

Australia

Asian American History

Chinese
Library of Congress collection on Chinese Exclusion Act

The Chinese American Experience 1857-1892 from Harpers Magazine

Japanese

Japanese American National Museum Collections Online

Korean
Korean American Historical Society

Korean American Heritage Library at USC 

Jewish American History

American Jewish Archives 

Latina, Latino, Latinx, Hispanic American History

Deaf History