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Statistics, studies and reports from over 18,000 sources. Includes data from businesses, government departments, market research concerns or associations and more.
These are statistics from the US Census and Statistical Abstracts from 1790 to 1990 or later. This includes the population census, which includes information on housing, economic conditions and much more.
"The Foreign Relations of the United States (FRUS) series presents the official documentary historical record of major U.S. foreign policy decisions and significant diplomatic activity."
Located at George Washington University, the Archive collects and publishes declassified documents acquired through the Freedom of Information Act (FOIA).
Database maintained at Middle Tennessee University that "provides access to digital collections of primary sources (photos, letters, diaries, artifacts, etc.) that document the history of women in the United States."
The Center of Military History (CMH) records the official history of the Army in both peace and war, while advising the Army Staff on historical matters.