CIA World Factbook
The World Factbook provides information on the history, people, government, economy, energy, geography, communications, transportation, military, and transnational issues for 267 world entities.
Writers from The New York Times, and The New York Times Magazine which "aims to reframe the country's history by placing the consequences of slavery and the contributions of Black Americans at the very center of the United States' national narrative"
Project Vote Smart offers unbiased information about voting records, biographical information, issue positions, interest group ratings, public statements, and campaign finance information.
"The National Archives and Records Administration (NARA) is the nation's record keeper. Of all documents and materials created in the course of business conducted by the United States Federal government, only 1%-3% are so important for legal or historical reasons that they are kept by us forever."
"Today's Library of Congress is an unparalleled world resource. The collection of more than 167 million items includes more than 39 million cataloged books and other print materials in 470 languages; more than 72 million manuscripts; the largest rare book collection in North America; and the world's largest collection of legal materials, films, maps, sheet music and sound recordings."