I just found out about this cool website that has complete scans of every issue of countless radio and music related publications, such as Billboard, Cashbox, Record World, etc etc. Here is the link to where you can view all of the issues of Billboard Magazine, which astonishingly goes all the way back to 1894!

https://worldradiohistory.com/Archiv...d-Magazine.htm

https://worldradiohistory.com/