Digitized items from the State Library of Pennsylvania and others.

A variety of primary sources (diaries, photographs, maps, oral histories, etc.) from the Library of Congress that document American history.

A primary source database containing over twelve million photographs dating back to 1826, more than 36,000 audio sound bites dating from the 1920’s, two million AP news stories since 1997, and more than 340,000 maps, graphs, charts, logos, flags, and illustrations.

- Digitized collection of primary sources (photos, letters, diaries, artifacts, etc.) that document the history of women in the United States.

Digitized collection of texts written about America from 1492-1820.

A site of digitized primary sources documenting Europe's history.

Fordham University collection of public domain and historical texts.

Contains many primary source documents about Islam.

An index of collections of digitized primary sources, on the topic of US Military.

Provides access to more than 4.1 million searchable newspaper pages from 581 newspaper titles, published in 25 states and the District of Columbia between 1836 and 1922.

Digitized Civil War primary sources, sponsored by the University of Virginia.

Digitized primary sources from Texas Tech University that document the war.

The link here takes you to a 1940 Census film, posted in YouTube by the National Archives. There are many old documentary film clips and so forth in YouTube from the National Archives, and other sources too.