Photograph of a mountain pass on a Peruvian railroad, taken on one of the Yale Peruvian Expeditions, 1911-1915. Photo 4004 (9-2954) from Herbert E. Gregory Book 13, page
Photograph of cliffs (probably basalt columns) along a railroad track near Ruicola Quarry, taken on ...
Photograph of a canyon along a railroad route near Santa Rosa, Cuzco Valley, taken on one of the Yal...
Photograph of one of the guano islands off the coast of Peru, taken on one of the Yale Peruvian Expe...
Photograph of a mountain pass on a Peruvian railroad, taken on one of the Yale Peruvian Expeditions,...
Photograph of the railroad route through the Angostura Narrows, Cuzco Valley, taken on one of the Ya...
Photograph of a glacially carved mountain and valley in the Cuzco area of Peru, taken on one of the ...
Photograph of a pack train on the road to Paruro, taken on one of the Yale Peruvian Expeditions, 191...
Photograph of divided mountain spurs in the Cuzco area of Peru, taken on one of the Yale Peruvian Ex...
Photograph of the mountainous Yaurisque district as seen from the road between Paruro and Cuzco, tak...
Photograph of cargo trains taking relics from Machu Picchu, taken on one of the Yale Peruvian Expedi...
Photograph of the rocky area known as El Rodadero de Sacsayhuaman, taken on one of the Yale Peruvian...
Photograph of the view of mountains and its rock layers from a ridge south of Cropesa, Peru, taken o...
Photograph of rock layers in a mountainside of the Cuzco Valley, taken on one of the Yale Peruvian E...
Photograph of the rocky area near Cuzco known as El Rodadero de Sacsayhuaman, taken on one of the Ya...
Photograph of the Angostura Narrows in Cuzco Valley, taken on one of the Yale Peruvian Expeditions, ...
Photograph of cliffs (probably basalt columns) along a railroad track near Ruicola Quarry, taken on ...
Photograph of a canyon along a railroad route near Santa Rosa, Cuzco Valley, taken on one of the Yal...
Photograph of one of the guano islands off the coast of Peru, taken on one of the Yale Peruvian Expe...
Photograph of a mountain pass on a Peruvian railroad, taken on one of the Yale Peruvian Expeditions,...
Photograph of the railroad route through the Angostura Narrows, Cuzco Valley, taken on one of the Ya...
Photograph of a glacially carved mountain and valley in the Cuzco area of Peru, taken on one of the ...
Photograph of a pack train on the road to Paruro, taken on one of the Yale Peruvian Expeditions, 191...
Photograph of divided mountain spurs in the Cuzco area of Peru, taken on one of the Yale Peruvian Ex...
Photograph of the mountainous Yaurisque district as seen from the road between Paruro and Cuzco, tak...
Photograph of cargo trains taking relics from Machu Picchu, taken on one of the Yale Peruvian Expedi...
Photograph of the rocky area known as El Rodadero de Sacsayhuaman, taken on one of the Yale Peruvian...
Photograph of the view of mountains and its rock layers from a ridge south of Cropesa, Peru, taken o...
Photograph of rock layers in a mountainside of the Cuzco Valley, taken on one of the Yale Peruvian E...
Photograph of the rocky area near Cuzco known as El Rodadero de Sacsayhuaman, taken on one of the Ya...
Photograph of the Angostura Narrows in Cuzco Valley, taken on one of the Yale Peruvian Expeditions, ...
Photograph of cliffs (probably basalt columns) along a railroad track near Ruicola Quarry, taken on ...
Photograph of a canyon along a railroad route near Santa Rosa, Cuzco Valley, taken on one of the Yal...
Photograph of one of the guano islands off the coast of Peru, taken on one of the Yale Peruvian Expe...