Longtime TV newsman Roger Mudd listed these in a Wall Street Journal column recently. They're not writing books, but they're about our business. Thought I'd pass them on in case they're of interest:
"The Press," by A.J. Liebling
"The News Business," by John Chancellor and Walter R. Mears (this one does have some good stuff about writing in it, Mudd says).
"The Journalist and the Murderer," by Janet Malcolm (lots about how journalists deal with their sources)
"The Elements of Journalism," by Bill Kovach and Tom Rosenstiel
"Reporting from Washington," by Donald A. Ritchie (history of the Washington press corps)