"[3][4] In 1969, Henderson took a one-year leave of absence from his advertising agency to serve as Special Assistant to the Postmaster General for Public Information, returning February 1970.
[5] In 1970, he was the Republican nominee for lieutenant governor of South Carolina.
[1] Henderson was elected secretary-treasurer of American Association of Advertising Agencies, "the most prestigious organization in its field" in 1971.
[6] In 1974, his life story to that point was described by a New York Times writer as a "slightly cracker-barrel rags-to-riches saga.
Twenty years later, the headline "A South Carolina Agency Closes Its Doors" told about the end of what The New York Times called Henderson Advertising.