The National Museum of American History collects and preserves more than 3 million artifacts, everything from the original Star-Spangled Banner and Abraham Lincoln’s top hat to Dizzy Gillespie’s angled trumpet and Dorothy’s ruby slippers from The Wizard of Oz.
The Internet Archive, a 501(c)(3) non-profit, is building a digital library of Internet sites and other cultural artifacts in digital form. Like a paper library, it provides free access to researchers, historians, scholars, the print disabled, and the general public.
The Library of Congress is the nation's oldest federal cultural institution and serves as the research arm of Congress. It is also the largest library in the world, with millions of books, recordings, photographs, maps and manuscripts in its collections.
Chronicling America enables the searching of America's historic newspapers from 1836-1922. The database has recently added its 10,000,000th newspaper page.
Designed for high school and college teachers and students, History Matters serves as a gateway to web resources and offers other useful materials for teaching U.S. history.