Multiple photographers. Cowboy-imagery campaign that ran 50+ years — the longest-running ad photo legacy.
From Wikipedia
The Marlboro Man is a figure that was used in tobacco advertising campaigns for Marlboro cigarettes. In the United States, where the campaign originated, it was used from 1954 to 1999. The Marlboro Man was first conceived by advertising executive Leo Burnett in 1954. The images initially featured rugged men portrayed in a variety of roles but later primarily featured a rugged cowboy or cowboys in picturesque wild terrain. The ads were originally conceived as a way to popularize filtered cigarettes, which at the time were considered feminine.