This book compiles weekly pop music charts from WCOL, a prominent Top 40 AM radio station in Columbus, Ohio, spanning the years 1968 to 1972. The volume aims to provide an accurate chronological compilation of these surveys, correcting errors found in original sources and online databases. It serves as a companion to an earlier edition covering the 1963-1967 period, drawing from multiple public domain sources including original published sheets, broadcast notations, newspaper archives, music trade periodicals, and specialized reference books and websites.

This compilation offers a valuable resource for researchers and enthusiasts of 1960s and 1970s popular music and radio history. The author's dedication to cross-referencing multiple sources aims to provide the most accurate representation of WCOL's weekly charts during the specified period. The book's utility lies in its detailed, chronological presentation of chart data, serving as a primary source for understanding music popularity and radio programming of the era. Its focus on correcting existing inaccuracies enhances its reliability for historical study.