The Gilder Lehrman website (and group) is a huge help for US history teachers. The site has 60,000" 60,000 letters, diaries, maps, pamphlets, printed books, newspapers, photographs, and ephemera that document the political, social, and economic history of the United States." There also have presentations, contests, etc. and even more benefits if your school becomes a member (and at $0.00, the price is right).
An overview of all of the great new resources and tools is available here. Some of the highlights of the new site include History by Era section, which includes podcasts, interactive features, online exhibitions, timelines and terms, primary sources, teaching tools, and content spanning all of American history.
The new website also includes 10 Common Core units by 2009 National History Teacher of the Year Tim Bailey. For more literacy-based learning, you can also take a look at our new Featured Primary Sources, from the Gilder Lehrman Collection, annotated and accompanied by teaching guides and questions. Our Collection search. Ten new short-videos, “Essential Questions in American History,” which features ten essential American history questions and in our multimedia section you can find nearly 40 under five minute video clips, great for use in the classroom!