The Media History Digital Library (MHDL) is a non-profit, open access digital archive founded by David Pierce[1] and directed by Eric Hoyt that compiles books, magazines, and other print materials related to the histories of film, broadcasting, and recorded sound and makes these materials accessible online for free. The MHDL both digitizes physical materials and acquires digital copies from outside libraries, archives, collectors, and other collaborators. Most of the material in its more than 2.5 million pages is in the public domain and therefore free for all to use with no restrictions.[2][3]
Projects of the Media History Digital Library include its search engine Lantern[4] and its data visualization platform Arclight. The Media History Digital Library is led by the Wisconsin Center for Film and Theater Research at the University of Wisconsin–Madison, in Madison, Wisconsin. Film and media studies librarian James Steffen has called the MHDL one of "the two most important digital collections today for studying media industries."[5]