This site is the best when comes to CHUM archives.
Rock Radio Scrapbook - http://rockradioscrapbook.ca/chumbug.html
The CHUM Archives, Part 1 (The 1950s and '60s)
In October, 2003, legendary CHUM deejay Bob Laine retired after 45 years with CHUM Ltd. But he didn't have to go far for his next project. Laine - with the help of long-time producer Doug Thompson - soon began the lengthy but fascinating task of sifting through CHUM's enormous archives, dating back to the station's beginning as a Top 40 station in 1957. It has been a labour of love, and very fruitful.
What Laine and Thompson have found is a treasure trove of airchecks, jingles, photos and other material from CHUM's Top 40 era. And they have been very generous in donating these new finds here in The CHUM Archives on Rock Radio Scrapbook, Canada's Aircheck Archive. CLICK HERE TO READ MORE