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President Roosevelt running an American steam-shovel at Culebra Cut, Panama Canal

Publisher: Underwood & Underwood
Subjects: Roosevelt, Theodore, Travel, Panama, Panama Canal, Excavation, Laborers, Steam Shovels, Gaillard Cut (Panama)
Collection: United States Library of Congress: Stereoviews
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President Roosevelt running an American steam-shovel at Culebra Cut, Panama Canal

Publisher: Underwood & Underwood
Subjects: Roosevelt, Theodore, Travel, Panama, Panama Canal, Excavation, Laborers, Steam Shovels, Gaillard Cut (Panama)
Collection: United States Library of Congress: Stereoviews
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President Roosevelt discussing America's task with workmen at Bas Obispo, Panama Canal

Publisher: Underwood & Underwood
Subjects: Roosevelt, Theodore, Travel, Panama, Panama Canal, Canal Construction, Excavation, Laborers
Collection: United States Library of Congress: Stereoviews
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Spanish laborers at work in Culebra Cut and loaded train hauling dirt from canal

Publisher: Underwood & Underwood
Subjects: Canal Construction, Panama, Canal Zone, Excavation, Laborers
Collection: United States Library of Congress: Stereoviews
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Sudbury River Conduit, B.W.W., div. 4, sec. 16, Oct. 18, 1876. View taken at the west end of narrow rock cut looking east.

Subjects: Massachusetts, Sudbury River (Mass.), Massachusetts, Hydraulic facilities, Pipes (Conduits), Excavation
Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library]