2. Bricklayers using a conveyor belt to transport bricks in Ohio, on Dec. 17th, 1927 Date: December 17, 1927 Format: Still image Access: Public
3. An excavation for gasoline tanks for the Bethlehem Steel Co. on Dec. 9th 1927 Date: December 9, 1927 Format: Still image Access: Public
4. Two African American men, in overalls and hats, shoveling dirt onto a conveyor belt Date: March 8, 1927 Format: Still image Access: Public