NEW YORK - Philip Jones Griffiths, a photographer who spent three years covering the Vietnam War, took a trip down memory lane last year. But he did it the hard way -- on the Ho Chi Minh trail. When he first saw what once had been North Vietnam's famous, much-bombed main supply route south, he suffered a bit of photographer's regret: "I suppose what I was thinking is that I should have been here 20 years ago. The photographer's instinct is to say, 'I've been cheated. I should have been here.' " His "Ho Chi Minh Trail" expedition, filmed for the BBC's "Great Journeys" series bought by 61 publi...
