Filtering by: Format video/mp4 Remove constraint Format: video/mp4 Sub-Collection series 5: films/sound recordings Remove constraint Sub-Collection: series 5: films/sound recordings Time Period (Topic) 1930s (1930-1939) Remove constraint Time Period (Topic): 1930s (1930-1939) Time Period (Topic) 1920s (1920-1929) Remove constraint Time Period (Topic): 1920s (1920-1929)