Recommended radio books

Corey Deitz, who started working in radio years before massive consolidation and syndication, has a list of books about radio that he recommends including:

"Cousin Brucie"
"The Pied Pipers of Rock ‘n’ Roll"
"Did You Whittinghill This Morning?"
"Have Mercy!"
"The Rush Limbaugh Story"
"Empire of the Air"

I haven't read any of them but I definitely want to check some out. I already read his book The Cash Cage, which I'm going to read again because now that I've been working in the biz, I'm sure I'll recognize familiar situations.