Understanding the U.S. Constitution is a free experimental app that links each section of the U.S. Constitution to the academic scholarship on JSTOR that quotes or cites it. Now available for iOS and Android, from JSTOR Labs.
Provides information on hundreds of the most significant people, events and topics in U.S. History. Topics range from the arrival of Vikings in North America all to the way to the first stirrings of the American Revolution and on through the Civil Rights movement, 9/11, and the War on Terror.