What is the value of chum charts from 1965 for chum 1050 am radio station in Toronto ontatio?

Chum charts from 1965 for CHUM 1050 AM radio station in Toronto are valuable as historical artifacts that provide insights into the music and cultural trends of that era. They reflect listener preferences, popular songs, and the station's programming decisions, making them significant for researchers and collectors interested in the evolution of radio broadcasting and pop culture. Additionally, these charts can have monetary value among collectors of vintage radio memorabilia.