Access thousands of primary sources — letters, photographs, speeches, posters, maps, videos, and other document types — spanning the course of American history. Register to create an account. Developed by the National Archives.
A nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping America and the world. It conducts public opinion polling,
Project Implicit is a non-profit organization and international collaboration between researchers who are interested in implicit social cognition - thoughts and feelings outside of conscious awareness and control. The goal of the organization is to educate the public about hidden biases and to provide a “virtual laboratory” for collecting data on the Internet.