History of Jazz Radio 101

[Teasing the Korean]

Generally speaking, how did radio treat jazz between, say, the end of the big band/swing era and the beginnings of alternative programming on FM? Were there AM stations that featured then-current jazz? Did stations do live broadcasts of jazz artists?

I'm sure someone could write a book on this (if it hasn't been done already). I'm just curious as to how jazz fit in with commercial radio during during this period.