books.google.ca - Now long out of print, John Dunning's Tune in Yesterday was the definitive one-volume reference on old-time radio broadcasting. Now, in On the Air, Dunning has completely rethought this classic work, reorganizing the material and doubling its coverage, to provide a richer and more informative account...http://books.google.ca/books/about/On_the_Air.html?id=EwtRbXNca0oC&utm_source=gb-gplus-shareOn the Air