Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. American Memory Timeline Primary sources for seven time periods of United States history are provided at this site covering 1783-1968. Each period is subdivided into various topics and contains an overview. Included are images, letters, lyrics, interviews, and more. http://lcweb2.loc.gov/ammem/ndlpedu/features/timeline/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *