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From The New York Times' Johnny Carson's Long Symbiosis With New York, by Sam Roberts:

The city had awakened from the Eisenhower years (in New York, they were dubbed the Wagner years, after Robert F. Wagner, the taciturn three-term mayor, not the Hollywood star)...

But Robert Wagner was so good in Hart to Hart!
Johnny Carson's Long Symbiosis With New York [NYT]
Robert Wagner [IMDB]