The three decades from the late 1950s onwards were the real golden age of photographic journeys. Programme 4 relives the journeys that produced some of the 'greatest paper movies' ever: Including Robert Frank's odyssey through 50s America and William Klein's one-man assault on the sidewalks of New York. Programme 4 also examines the arrival of colour as a credible medium for 'serious' photographers, as controversial at the time as Dylan going electric. Contributors include legendary photographers like William Klein, William Eggleston, Robert Adams, Joel Sternfeld, Joel Meyerowitz, Martin Parr and artist Ed Ruscha.