Except for Screen Studies Collection and International Index for the Performing Arts (IIPA), the other, online databases for film did not begin indexing film magazines and journals until the early 1970's.
Using the Screen Studies Collections, you can search the American Film Institute (AFI) Catalog and the Film Index International from the British Film Institute at the same time. Both catalogs include citations to industry and scholarly articles about the films. Most of the industry articles tend to be short blurbs, but were written at the time of filming. These bibliographies, whether short or long, are good starting places for finding information about the films.
These are books found mostly in Baker/Berry Reference. Depending on films researched, these books can provide you with many reviews for analysis.