LBJ's is briefed by John McCone; visit to see Charles Marsh, a family friend; to service at St. Mark's Church; visit to Arlington National Cemetery to place flowers at JFK's grave; returning to White House, Lady Bird greets Tommy Corcoran and James Rowe; Lady Bird meets with McGeorge Bundy about bridging gap between JFK and LBJ administrations; Luci Johnson; Lynda Johnson; dinner with the Fortases and Golds[chmidts]