inclined planes, robert dennis collection of stereoscopic views

Mt. Pisgah Plane. Länge 2.341 Fuß, Höhe 664 Fuß.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane. Länge 2.341 Fuß, Höhe 664 Fuß.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad. Mt. Jefferson Plane. 19th century Pennsylvania st...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad, Blick auf den Mt. Pisgah-Ebene.

Picryl description: Public domain image of railway tracks, train station, railroad building, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

[Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.]

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad, Blick auf den Mt. Pisgah-Ebene.

Picryl description: Public domain image of railway tracks, train station, railroad building, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad. Blick auf den Mt. Pisgah Plane.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Looking down Jefferson Plane. 19th century Pennsylvania stereoscope ca...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane, Switchback R.R. 19th century Pennsylvania stereoscop...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad, Mt. Pisgah plane. 19th century Pennsylvania stere...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mauch Chunk, Penn. 19th century Pennsylvania stereoscope card.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

[Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.]

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Lehigh Valley Railroad Company. Looking down Mt. Pisgah. Stereoscope c...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mauch, Pa. Zeigt erste Steigung.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Rückschaltung R.R. Blick auf den Mt. Pisgah Plane.

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Switchback Railroad. Mt. Pisgah plane. 19th century Pennsylvania stere...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pigah Plane. Switchback R.R. 19th century Pennsylvania stereoscope...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mauch, Pa. Zeigt erste Steigung.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mauch Chunk, Penn. 19th century Pennsylvania stereoscope card.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad. Mt. Jefferson Plane. 19th century Pennsylvania st...

Mauch, Pa. Zeigt erste Steigung.

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

Switchback Railroad, Mt. Pisgah plane. 19th century Pennsylvania stere...

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Looking down Mt. Pisgah Plane. - stereoscopic view, public domain phot...

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Looking down Jefferson Plane. 19th century Pennsylvania stereoscope ca...

Mt. Pigah Plane. Switchback R.R. 19th century Pennsylvania stereoscope...

Switchback Railroad, Mt. Pisgah plane. 19th century Pennsylvania stere...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Rückschaltung R.R. Blick auf den Mt. Pisgah Plane.

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Switchback Railroad, Mt. Pisgah plane. 19th century Pennsylvania stere...

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad, Blick auf den Mt. Pisgah-Ebene.

Picryl description: Public domain image of railway tracks, train station, railroad building, free to use, no copyright restrictions.

Mauch Chunk, Penn. 19th century Pennsylvania stereoscope card.

Mt. Pisgah Plane. Länge 2.341 Fuß, Höhe 664 Fuß.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane. Länge 2.341 Fuß, Höhe 664 Fuß.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Switchback Railroad. Mt. Jefferson Plane. 19th century Pennsylvania st...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Switchback Railroad. Mt. Pisgah plane. 19th century Pennsylvania stere...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mauch Chunk, Penn. 19th century Pennsylvania stereoscope card.

Switchback Railroad. Mt. Pisgah plane. 19th century Pennsylvania stere...

Switchback Railroad. Mt. Jefferson Plane. 19th century Pennsylvania st...

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane, Switchback R.R. [Eisenbahn].

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Lehigh Valley Railroad Company. Looking down Mt. Pisgah. Stereoscope c...

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane, Switchback R.R. 19th century Pennsylvania stereoscop...

Lehigh Valley Railroad Company. Looking down Mt. Pisgah. Stereoscope c...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane, Switchback R.R. [Eisenbahn].

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane, Switchback R.R. 19th century Pennsylvania stereoscop...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Lehigh Valley Railroad Company. Looking down Mt. Pisgah. Stereoscope c...

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pigah Plane. Switchback R.R. 19th century Pennsylvania stereoscope...

Switchback Railroad. Blick auf den Mt. Pisgah Plane.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Looking down Mt. Pisgah Plane. - stereoscopic view, public domain phot...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Looking down Jefferson Plane. 19th century Pennsylvania stereoscope ca...

[Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.]

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

[Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.]

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Switchback Railroad, Blick auf den Mt. Pisgah-Ebene.

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

Looking down Jefferson Plane. 19th century Pennsylvania stereoscope ca...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Pigah Plane. Switchback R.R. 19th century Pennsylvania stereoscope...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Pisgah Plane. 2322 Fuß lang, 864 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mt. Jefferson Plane. 2070 Fuß lang, 462 Fuß hoch.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... Mehr

Mauch, Pa. Zeigt erste Steigung.

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

Mt. Pisgah Plane, Switchback R.R. 19th century Pennsylvania stereoscop...

Switchback Railroad. Mt. Pisgah plane. 19th century Pennsylvania stere...