Sightseeing boats this summer were cruising off the Kennedy compound at Hyannisport blaring a tour guide's spiel from loudspeakers. When Rose Kennedy finally complained to the selectmen, they persuaded the guides to turn down their speakers when they pass the compound and refrain from broadcasting across the water any mention of the assassinations of John and Robert Kennedy.
In Dallas this week, another entrepreneur, named Aubrey Mahew, who bought the Texas School Book Depository last year, is opening the building to tourists. He has not yet decided how much to charge the tourists who want to see the sixth floor, where Lee...