COMING ATTRACTIONS: The History of Movie Trailers
A feature documentary from the Andrew J. Kuehn, Jr. Foundation
http://online-movie-db.info/watch.php?vid=Coming_Attractions:_The_History_of_the_Movie_Trailer
While interested visitors can see the documentary online (at the link above) it is also on deposit with the Academy of Motion Picture Arts and Sciences and with film schools and film archives around the country. On this page, you will find a monograph on the history of movie trailers, drawn from the research and interviews done for the film, as well as a timeline of important dates in that history.