Start with high-confidence journalism books, then narrow by subgenre or adjacent topics.
A History of Broadcasting in the United States: Volume 1: a Tower of Babel. to 1933
Erik Barnouw
Catch and Kill
Ronan Farrow, Little, Brown & Company
How the Word Is Passed
Clint Smith
On Air
Steve Oney
Liberty and the News
Walter Lippmann
Pain Killer
Barry Meier