Travel art "has become a major area of collecting," said Jim Lapides, owner of the poster gallery, which furnished some of the images for Hühne's book. That's in part because it wistfully evokes a time when travel was mysterious and privileged, Lapides said, beginning with the advent of the Orient Express - which coincided with the dawn of the stylish advertising poster. "That sort of thing had to be promoted, and the poster was colorful and practical," Lapides said. "It could be put right on the platform."