Do your famous disappearing act.

Year: 1970s
Artist: Henry "Hank" Syverson
 
In the early 1970s, Hank Syverson was an illustrator at J. Walter Thompson, Pan Am's ad agency, and he was asigned to the Pan Am account. He produced whimsical art for a series of ads, and at least on poster. 
 
In this poster, the reader is prompted to use Pan Am to disappear.