Yonkers pressure tunnel. Completed section of standard circular type o...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Yonkers pressure tunnel. View showing completed grading around Shaft 8...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Camps. Croton Lake pressure tunnel. ... Contract 24. May 6, 1910.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Wallkill pressure tunnel. View of steel arch forms and concrete platfo...
Picryl description: Public domain image of a chamber, cell, interior, underground vault architecture, free to use, no copyright restrictions.
Van Cortland pressure tunnel. ... Contract 30. May 3, 1912.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Surveys. Taking cross-section with sunflower instrument in the City t...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Eastview tunnel. View showing forms in place with completed arch and s...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tunnel on N. & W. R. R. - Lower End.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
The Natural Tunnel, [Scott County, Va.]
Public domain illustrated book page scan, American, free to use, no copyright restrictions image - Picryl description
Machinery for compressing air, Hoosac Tunnel.
Massachusetts 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 wh... More
[Men and children posed at the blacksmith's shop at the east end of th...
Picryl description: Public domain image of a locomotive, train cars, railroad tracks, railway, 19th-20th century, free to use, no copyright restrictions.
Entrance to tunnel, east end. Massachusetts stereoscope card collectio...
Massachusetts 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 wh... More
Inside the Sutro Tunnel. Nevada. 19th century stereoscope card.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tunnel, [railroad underpass] White Hall, N.Y.
Public domain image of a large historic building, city hall, urban architecture, free to use, no copyright restrictions - Picryl description
Lower tunnel cascade, Fall Creek. New York Sterecope Card.
New York 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 ass... More
Observatory and Tunnel, west side. New York Sterecope Card.
Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.
Tunnel. New York Sterecope Card. NYPL Collection.
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
Pennsylvania Railroad, Allegheny Tunnel. Stereoscope card.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Pennsylvania Railroad, Spruce Creek tunnel. Stereoscope card.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Looking out of the tunnel at Livermore Pass, Alameda County, Western P...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tunnel No. 2, near Wahsatch. 19th century stereoscope card. Utah.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
[...] approach Mullen Tunnel. [Men working at entrance to Mullen Tunne...
Public domain image of a train station, free to use, no copyright restrictions - Picryl description
The Blue Ridge and C. & O. West from Mason Tunnel, Virginia
Picryl description: Public domain photo of a vintage Ohio postcard, free to use, no copyright restrictions image.
Raton tunnel on the A.T. & S.F. R.R. N.M.
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Map of routes to the Holland Tunnel.
Public domain image of the vintage map from NYPL Lionel Pincus and Princess Firyal Map Division, free to use, no copyright restrictions image. The Lionel Pincus and Princess Firyal Map Division is one of the wo... More
Road and rocks near Summit Tunnel, Donner Peak in dist.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Rondout pressure tunnel. View of foot of shaft showning 90-degree junc...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Yonkers pressure tunnel. Contract 54. April 18, 1913.
Picryl description: Public domain image of a construction site, industrial or commercial building, free to use, no copyright restrictions.
Hudson pressure tunnel. View around the East test-shaft on east side o...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Wallkill pressure tunnel. ... Contract 47. May 25, 1910.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Borings. Boxes containing 1-inch, 1 3/4 -inch and 3-inch cores recover...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Yonkers pressure tunnel. ... Contract 54. October 9, 1912.
Picryl description: Public domain image of a damaged, burned, or destroyed building, natural disaster, war destruction, ruins, 19th-century architecture, free to use, no copyright restrictions.
Camps. Rondout pressure tunnel. ... Contract 12. July 20, 1909.
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Tunnel excavation showing operation on both ...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
[View of a tunnel.] New York Sterecope Card.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Cavern Tunnel, lower view. New York Sterecope Card.
New York 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 ass... More
Interior of Railway Suspension Bridge. New York Sterecope Card.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Pennsylvania Railroad, Blairsville Tunnel. Stereoscope card.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Tunnel No. 3, Weber [River]. 19th century stereoscope card. Utah.
Public domain image of a train station, free to use, no copyright restrictions - Picryl description
Cavern Tunnel, lower view. New York Sterecope Card.
New York 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 ass... More
Interior section of the Chicago Lake tunnel.
Chicago Illinois 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... More
The underground tunneling machine - driving the machine ahead.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Highland Park, Tunnel Walk, Pittsburgh, Pa.
Public domain photo of vintage Pennsylvania postcard, 19th century, free to use, no copyright restrictions image - Picryl description.
State Line Tunnel, Berkshire Hills, Mass.
Public domain photo of vintage Massachusetts postcard, free to use, no copyright restrictions image - Picryl description
East Portal, Hoosac Tunnel, North Adams, Mass.
Public domain photo of vintage Massachusetts postcard, free to use, no copyright restrictions image - Picryl description
Wallkill pressure tunnel. Concrete for walls of chamber over Drainage...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. View looking up incline to platform from whic...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Organization. City tunnel. Celebration ceremonies attending the holing...
Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Cooling-towers for powerhouse and air-conditioning ; Steam-plant ; Pow...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Washington Street tunnel, east entrance. Chicago Stereoscope Card Coll...
Public domain image of a historic building, free to use, no copyright restrictions - Picryl description
Lowell water works tunnel. Lowell, Massachusetts. Stereoscope card.
Massachusetts 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 wh... More
Cut and Tunnel between Garrisons and Cold Spring.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
The Tunnel, lower end, Havana Glen.
New York State 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 w... More
Observatory and Tunnel. New York Sterecope Card.
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
The Inclined Railway, Prospect Park. New York Sterecope Card.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tunnel through Lewiston Mountain, Niagara, N.Y.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
[...] approach Mullen Tunnel. [Men working at entrance to Mullen Tunne...
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
East from Mullen Tunnel Grade [showing log cabin below].
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 assembled it over a period of mo... More
[High tressel, before tunnel no. 2.]
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
High tressel, before tunnel no. 2.
Utah 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 assembl... More
Entrance to the ruins of Ba'albek. At the south-west corner, through ...
Public domain image of Egyptian art, free to use, no copyright restrictions photo - Picryl description
Hoosac Tunnel, Mass. Massachusetts stereoscope card collection, NYPL
Massachusetts 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 wh... More
View of the cascade 200 feet high, 1-4 mile up the creek, to the right...
Massachusetts 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 wh... More
Two column bent viaduct; traveler for erecting forms, central park tun...
Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.
Yonkers pressure tunnel. Steel ribs for concrete forms, made up of 5-i...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. View of head-frame and cage with muck car at ...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Yonkers pressure tunnel. Structural-steel interlining before the conc...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Hudson pressure tunnel. View of Drainage shaft showing completed steel...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Head-frame, hoisting engine and bucket at to...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Mekeel tunnel. View showing steel forms in place for concrete lining. ...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Sarles tunnel. Completed trimming of tunnel shown in foreground. .. Co...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Construction of Downtake chamber at junction...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
City tunnel. View of drainage drift showing section of steel interlini...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Camps. Rondout pressure tunnel. ... Contract 12. July 21, 1910.
Public domain image of a romantic ruins landscape, classical architecture, free to use, no copyright restrictions - Picryl description
Wallkill pressure tunnel. Work of screeding concrete of invert in prog...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Moodna pressure tunnel. View at top of Shaft 7. Hudson river about 150...
Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
Hudson pressure tunnel. View showing Drainage shaft with corrugated pi...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. View of drainage drift with completed concret...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Columns set up with drills ready to operate ...
Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.
Wallkill pressure tunnel. View showing details of steel forms for conc...
Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
In the tunnel, New Almaden. Sterescope Cards NYPL Collection.
California 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 a... More
Entrance to tunnel, east end. Massachusetts stereoscope card collectio...
Massachusetts 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 wh... More
View of tunnel, E.R.R. Massachusetts stereoscope card collection, NYPL
Massachusetts 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 wh... More
[Raton tunnel on the A.T. & S.F. R.R. N.M.]
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Toward Cavern Tunnel,. New York Sterecope Card.
New York 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 ass... More
Tunnel under the Drive, Prospect Park, Brooklyn.
Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.
Pennsylvania Railroad, Allegheny Tunnel. Stereoscope card.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Pennsylvania Railroad, Tunnel near Greensburg. Stereoscope card.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Junc's R.R. tunnel under Market & Chestnut streets.
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Junc's R.R. [railroad] tunnel under Market & Chestnut Streets.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
R. R. bridge & tunnel, Fairmount Park.
Picryl description: Public domain image of an arch bridge, stone architecture, free to use, no copyright restrictions.
Tunnel near Devil's Gate. 19th century stereoscope card. Utah.
Utah 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 assembl... More
West from Tunnel No. 4, Weber Canon.
Utah 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 assembl... More
The Summit Tunnel, 1,200 feet long, Livermore Pass, Alameda Co. lookin...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
East end of tunnel, showing bed of road.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Tunnel site in Glen Canyon. December 23, 1889. Beauty Point. Photograp...
Robert Brewster Stanton photographs Picryl description: Public domain photograph of National Park, nature, free to use, no copyright restrictions image.
Tunnel No. 6, Moffat Road, Colorado
Public domain photo of vintage Colorado postcard, 19th century, free to use, no copyright restrictions image - Picryl description.
Entrance to tunnel, west end. Massachusetts stereoscope card collectio...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
View of east end of tunnel looking out.
Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description