Both academic and professional resources, newspapers, magazines, radio, TV, film, new technology, advertising.
Some links are out of date.
Great for primary source of information. Site loaded with great pictures of writings from around the world. United States Early Radio History by Thomas H. White. This gives you filmographies, bios. of actors, directors, locations, how much money the film made, who financed it, and my other goodies. There are some engaging and informative articles on film and filmmaking.