Radio in the San Francisco Bay Area witnessed a monumental change in 1966, when KFRC — 610 on the AM dial — took to the airwaves with an all-new format that would, through the years, revolutionize radio in northern California and throughout the rest of the country. Here, courtesy of John Catchings, is the “Big 30” song list (or hit sheet) from the week of May 25, 1966, when KFRC became “The Big 610” and Bay Area radio would never be the same. Catchings, the retired longtime chairperson of the Archive & Museum Committee, worked at KFRC throughout the 1960s and was there when the station became “The Big 610”. This is from his personal collection. Thank you, John, for sharing this with us.