Your first step will be to consult the Film Review Index, which is located on the west wall of 200. It is organized by year. For early films, use Vols. 1 or 2.
The two best sources for print reviews of early films are Variety and the New York Times. Both can be found along the south wall of room 200. Turn to the left when you enter 200.
Variety Film Reviews, Call number: Q.791.4375 V427
To find more reviews, consult the resources on the Film Review page of this guide.