Most of these early entries were produced in New York and either done live, on kinescope, or filmed and, in most cases, were thirty minutes in length. By the late 1950's and into the 1960's, production values were increasing and the newer shows were becoming sixty minutes in length. These shows were mostly being filmed on the West Coast and many exhibited the image of "gloss and glamour" with beautiful girls and handsome guys in attractive settings. Examples of these shows are "77 Sunset Strip" (1958-1964) and "Hawaiian Eye" (1959-1963). These two were basically interchangeable as they had similar plots and stars and both came from Warner Brothers. One of the only differences was the settings: one in L. A. and one in Hawaii. Other notable detective shows from the 1960's include "Mannix" (1967-1975) with Mike Connors handling cases in a rough and tumble manner and "I Spy" (1966-1969) which was a lighthearted entry most notable for the success of Bill Cosby as the first black performer to star in a TV dramatic series.