Get ready for months of John F. Kennedy nostalgia.

The calendar is dotted with 50th anniversary commemorations of events from JFK's crowded last year of life, ending with the saddest of anniversaries in November.

In speeches, books, magazines, conferences, symposiums, news stories and television specials, admirers will pay tribute to the forever youthful president who inspired millions and was cut down in his prime in Dallas on Nov. 22, 1963.

"He's frozen in people's minds at age 46," said Kennedy biographer Robert Dallek. "Kennedy still gives people a sense — to this day — of hope for the future."...