Gilder Lehrman Institute offers resources for the study of history. A recent addition includes podcasts.
Video from the NBC archives with educational relevance
Welcome to HistoryBuff.com, a nonprofit organization devoted to providing FREE primary source material for students, teachers, and historybuffs. This site focuses primarily on HOW news of major, and not so major, events in American history were reported in newspapers of the time.
Talking History (now inactive) consists of a series of podcasts intended to energize the study of specific topics in history
Portal to all Smithsonian sites. [portal history science]
National Park Services - biology, geology, ecology, history.
Site is dedicated to the explorers, voyages, events, and historical backgrounds of countries throughout the world
This day in history photographs from Nikon
Virginia Center for Digital History - award winning site attempting to pioneer digital tools and storage for the study of history. Specific projects.