Search Constraints
Filtering by:
File Format
video/mp4
Remove constraint File Format: video/mp4
Resource Type
moving image
Remove constraint Resource Type: moving image
Subject
antarctica--aerial exploration
Remove constraint Subject: antarctica--aerial exploration
Subject
airplanes
Remove constraint Subject: airplanes
Subject
shipment of goods
Remove constraint Subject: shipment of goods
Subject
equipment and supplies
Remove constraint Subject: equipment and supplies
Time Period (Topic)
1920s (1920-1929)
Remove constraint Time Period (Topic): 1920s (1920-1929)