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![Hydraulic Excavation, Miraflores - Monitors in Oberation [sic], December 21, 1910. Creator: Harris & Ewing.](https://d21cmcylgnyv91.cloudfront.net/aBXaWvH9OyVUg0vgOsMs6ycLmtI=/fit-in/224x/2952511.jpg "Hydraulic Excavation, Miraflores - Monitors in Oberation [sic], December 21, 1910. Creator: Harris & Ewing.")
![National Geographical [sic] Society - Anniversary of Bell Telephone, 1916. Creator: Harris & Ewing.](https://d21cmcylgnyv91.cloudfront.net/b3sqJKVgPRk9H4mv2uFJ7flm9Ic=/fit-in/224x/2952821.jpg "National Geographical [sic] Society - Anniversary of Bell Telephone, 1916. Creator: Harris & Ewing.")
![Bureau of Reclamation - Arrowcock [sic] Dam, Boise, Idaho; Showing Tunnel..., 1912. Creator: Harris & Ewing.](https://d21cmcylgnyv91.cloudfront.net/oE_Lypsrm6cEAQWSvST1Qdtvcpo=/fit-in/224x/2952919.jpg "Bureau of Reclamation - Arrowcock [sic] Dam, Boise, Idaho; Showing Tunnel..., 1912. Creator: Harris & Ewing.")
