John F. Kennedy Presidential Library and Museum:

http://www.jfklibrary.org/

The Sixth Floor Museum:

http://www.jfk.org/

John F. Kennedy Presidential Library and Museum’s Ready Reference, including New York Times chronology of Kennedy’s presidency, famous quotations, and images of government documents:

https://www.jfklibrary.org/Research/Research-Aids/Ready-Reference.aspx

The White House’s Kennedy page:

https://www.whitehouse.gov/about-the-white-house/presidents/john-f-kennedy/

A compilation of videos and audio recordings of Kennedy, hosted by history.com:

http://www.history.com/topics/john-f-kennedy

Selected Kennedy speeches at the Miller Center:

http://millercenter.org/president/kennedy

National Archives’ collection of JFK Assassination Records:

http://www.archives.gov/research/jfk/

Lyndon B. Johnson Presidential Library:

http://www.lbjlibrary.org/