Nov. 22, 1963:

11:37 a.m.: Kennedy arrives at Dallas Love Field from Fort Worth. He and the first lady, Jackie, are accompanied by Vice President Lyndon Johnson and his wife, Lady Bird. They have come to Dallas as part of a scheduled two-day Texas tour in preparation for the 1964 presidential campaign. An estimated 200,000 Dallas residents greet the president's motorcade as it passes through downtown on the way to a sold-out luncheon for 2,600 at the Dallas Trade Mart.

12:30 p.m.: Kennedy is fatally shot and Texas Gov. John Connally seriously wounded as the open limousine in which they are riding moves west on Elm Street through Dealey Plaza, on the western edge of downtown Dallas.

12:32 p.m.: Order clerk Lee Harvey Oswald is reportedly seen in the second-floor lunchroom of the Texas School Book Depository, a textbook distribution building facing the plaza. About 35 minutes before the president's motorcade passed, Oswald had been observed on the sixth floor.

1 p.m.: The president is pronounced dead at Parkland Memorial Hospital.

1:12 p.m.: Witness reports lead police to search the Texas School Book Depository. Police find a barricade of boxes, three spent bullet cartridges and a paper bag in the southeast corner window area on the sixth floor. A few minutes later they find a rifle stuffed between boxes near the staircase. This evidence, along with fingerprints and palm prints found on two boxes, later links the shooting to Oswald, who started working at the depository on Oct. 15. Investigators also search the rail yards and fence area north of Elm Street and west of the depository later known as the grassy knoll. They find no evidence at the knoll.

1:18 p.m.: Police learn that Dallas patrolman J.D. Tippit has been shot in the Oak Cliff section of the city south of downtown.

1:50 p.m.: Oswald is arrested at the Texas Theatre after a witness who saw him at the Tippit shooting leads police there. Police soon link him to the Tippit murder and Kennedy assassination.

2:38 p.m.: Johnson sworn in as president aboard Air Force One, with Jackie Kennedy at his side.

Nov. 24, 1963: