Centennial Views, Philadelphia. Arbor in Fairmount Park
Centennial Views, Philadelphia. Arbor in Fairmount Park
Centennial Views, Philadelphia. Horticultural Grounds from Horticultural Hall
Centennial Views, Philadelphia. Horticultural Grounds from Horticultural Hall
Riverside Geyser blowing off scalding steam and spray, Yellowstone Park
Riverside Geyser blowing off scalding steam and spray, Yellowstone Park
Oneonta Gorge, Columbia River, Oregon, U.S.A.
Oneonta Gorge, Columbia River, Oregon, U.S.A.
Government Building, Bridge of Nations and "Trail", Portland Exposition, Oregon, U.S.A.
Government Building, Bridge of Nations and "Trail", Portland Exposition, Oregon, U.S.A.
Below the Horseshoe Falls in Winter, Niagara Falls, N. Y.
Below the Horseshoe Falls in Winter, Niagara Falls, N. Y.
The Brooklyn Bridge, New York
The Brooklyn Bridge, New York
Most striking of Sky-scrapers. The Flatiron Building (20 Stories), Broadway, New York, U.S.A.
Most striking of Sky-scrapers. The Flatiron Building (20 Stories), Broadway, New York, U.S.A.
Lección 30, Vías. Lección 31, Los nudos
Lección 30, Vías. Lección 31, Los nudos
Lecciones 28 y 29, Análisis de tránsito urbano
Lecciones 28 y 29, Análisis de tránsito urbano
