Amazon.com description: Product Description: KGB was a leading performer in San Diego's Top 40 radio market during the late 1960s and early 1970s. This volume compiles the station's weekly pop music charts from late 1966 to February 1972. Includes an essay surveying KGB's years as a Top 40 pacesetter. Like the other radio charts titles, my goal was to provide a convenient chronological compilation of weekly surveys with corrections of the considerable errors found in both the original sources and in translation to online sites. These radio charts – which exist in the public domain – can be found in a multitude of sources, including original published sheets distributed via retail outlets, mail inquiries, etc., notation of on-air broadcasts, back issues of area newspapers (where stations are located) and music trade periodicals, specialized reference books, and websites interested in historical documentation, most notably, Oldiesloon, musicradio77, and ARSA. I employed multiple sources in the compilation of each radio chart volume in order to provide the most accurate data possible.