Research Guides
Primary sources are items from the time period that you are studying. For Cinema and Television, these sources could include not only the films and shows themselves, but also first hand accounts and production notes, costumes and sets, magazine advertisements and articles, and contemporaneous reviews.
Whether something is a secondary or primary source can be ambiguous and decided by context and research question point of view.
For magazines, check out the Media History Digital Library (AKA Lantern)
For movie reviews, search the movie title and year with The New York Times Film Reviews (1851-2019)
Still Images, Posters, and Scripts