Late 1950s. Trans World Airlines continues its trend of bright and eye-catching posters with this illustration by Bob Smith, utilizing the golden hue of the setting sun to highlight the beautiful architecture found in California's historic Spanish missions. (http://www.invaluable.com/auction-lot/twa-los-angeles-c.-late-1950s-.-bob-smith-full-b-86094-c-62b4b6da76?campaign=rr)