JFK: A look back in LIFE photos

Nov. 22, 1963: President John Kennedy delivers a brief speech outside the Hotel Texas in Fort Worth, Texas, shortly before flying to Dallas. This photo was not published in LIFE. (Art Rickerby—Time & Life Pictures/Getty Images)  

Nov. 22, 1963:  John and Jackie Kennedy at Love Field in Dallas, Texas. This photo was not published in LIFE. (Art Rickerby—Time & Life Pictures/Getty Images)

Nov. 22, 1963: Lyndon Johnson with Jackie and John Kennedy in Forth Worth, Texas, just hours before JFK's assassination. This photo was not published in LIFE. (Art Rickerby—Time & Life Pictures/Getty Images)

Nov. 22, 1963: President John Kennedy, Jackie Kennedy, Vice President Lyndon Johnson and others at a Chamber of Commerce breakfast in Fort Worth, Texas. This photo was not published in LIFE. (Art Rickerby—Time & Life Pictures/Getty Images) 

Nov. 22, 1963: Commuters leaving New York City read of John F. Kennedy's assassination. (Carl Mydans—Time & Life Pictures/Getty Images)  

Nov. 25, 1963: Robert Kennedy, Jacqueline Kennedy and Edward Kennedy at John F. Kennedy's funeral at Arlington Cemetery. This photo was not published in LIFE. (Stan Wayman—Time & Life Pictures/Getty Images)

Nov. 25, 1963: Jacqueline Kennedy and Robert Kennedy at John F. Kennedy's funeral at Arlington Cemetery. This photo was not published in LIFE. (Stan Wayman—Time & Life Pictures/Getty Images)