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Some of the odd forms of chiseled stone in the Garden of the Gods, Colo., U.S.A.

Some of the odd forms of chiseled stone in the Garden of the Gods, Col...

Colorado 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

Table des planche [2] [with caligraphy-like forms in the shape of a lion]

Table des planche [2] [with caligraphy-like forms in the shape of a li...

Public domain image of Egyptian art, free to use, no copyright restrictions photo - Picryl description

Wallkill pressure tunnel. End view of section of concrete lining with invert laid in foreground. Erection forms in progress in background. Contract 47. April 11, 1911.

Wallkill pressure tunnel. End view of section of concrete lining with...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Ashokan Reservoir. View showing concrete core-wall of West dike with wooden forms in place. Placing and rolling embankment at right. Contract 3. June 21, 1910.

Ashokan Reservoir. View showing concrete core-wall of West dike with w...

Public domain photograph of construction site, free to use, no copyright restrictions image - Picryl description

Many forms of transportation required in large centers of population. New York City.

Many forms of transportation required in large centers of population. ...

Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.

Many forms of transportation required in large centers of population. New York City.

Many forms of transportation required in large centers of population. ...

Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.

Yonkers pressure tunnel. One type of steel forms for lining tunnel. ... Contract 54. November 15, 191.

Yonkers pressure tunnel. One type of steel forms for lining tunnel. ....

Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description

Catskill Aqueduct Headworks. Placing concrete forms for connections between Lower Pressure aqueduct and 48-inch control valves. Intake castings from Upper Pressure aqueduct to 48-control valve at left. Contract 10. May 6, 1913.

Catskill Aqueduct Headworks. Placing concrete forms for connections be...

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 platform. ... Contract 47. June 7, 1911.

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.

Eastview tunnel. View showing forms in place with completed arch and side-wall in foreground. ... Contract 52. april 25, 1912.

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.

Two column bent viaduct; traveler for erecting forms, central park tunnel - (in this tunnel ducts are built in the sidewalls).

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-inch I-beams spaced 3 feet apart. Lagging plates placed as concrete is built up from the invert. Contract 54. May 1, 1912.

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.

Mekeel tunnel. View showing steel forms in place for concrete lining. Contract 2. June 27, 1911.

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.

Ashokan Reservoir. Dumping earth from cableway for embankment of the West dike. Core-wall with concrete forms in background. Contract 3. October 11, 1910.

Ashokan Reservoir. Dumping earth from cableway for embankment of the W...

Public domain photograph of electric wires, power line, free to use, no copyright restrictions image - Picryl description

Wallkill pressure tunnel. View showing details of steel forms for concrete lining of pressure tunnels. Contract 47. October 5, 1910.

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

Ashokan Reservoir. View of up-stream face of Olive Bridge dam showing forms for concreting stream-flow opening in place. Note 6-foot opening at bottom for carrying flow of Esopus creek. Contract 3. August 25, 1913.

Ashokan Reservoir. View of up-stream face of Olive Bridge dam showing ...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Dutch Gap canal and group of soldiers. Taken after the bank was blown out. On the extreme end a portion of the bank remains, which forms a profile, which the soldiers call Jeff. Davis.

Dutch Gap canal and group of soldiers. Taken after the bank was blown ...

Civil War 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 as... More

Some of the odd forms of chiseled stone in the Garden of the Gods, Colo., U.S.A.

Some of the odd forms of chiseled stone in the Garden of the Gods, Col...

Colorado 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

Wallkill pressure tunnel. Side-wall and arch forms in place ready for concrete, with inclined track to platform on level with top of side-wall. Contract 47. April 11, 1911.

Wallkill pressure tunnel. Side-wall and arch forms in place ready for ...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

The gateway of Asyût. It opens into a large gateway court which forms part of the governor's palace and leads into the town.

The gateway of Asyût. It opens into a large gateway court which forms ...

Public domain image of Egyptian art, free to use, no copyright restrictions photo - Picryl description

Many forms of transportation required in large centers of population. New York City.

Many forms of transportation required in large centers of population. ...

Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.

Wallkill pressure tunnel. View showing full-section steel forms in place. The concrete is placed in one operation. Contract 47. June 8, 1911.

Wallkill pressure tunnel. View showing full-section steel forms in pla...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Bonticou tunnel. Erecting steel area arch forms for concreting. .. Contract 47. April 12, 1911.

Bonticou tunnel. Erecting steel area arch forms for concreting. .. Con...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Defile of the Jebel Tíh. The long white range of the Tíh mountains, mostly of the same average height, forms the southern and south-eastern boundary of the great 'wilderness of the forty year's wanderings.'

Defile of the Jebel Tíh. The long white range of the Tíh mountains, m...

Public domain scan of an art print, free to use, no copyright restrictions image - Picryl description

Rondout pressure tunnel. View looking up incline to platform from which concrete is shoveled into arch forms. Contract 12. October 10, 1910.

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.

Kensico reservoir. Valves and piping and concrete forms for blow-off in the Lower gate-chamber beneath the Terrace of Kensico dam. Contract 9. March 30, 1914.

Kensico reservoir. Valves and piping and concrete forms for blow-off i...

Picryl description: Public domain image of a construction site, industrial or commercial building, free to use, no copyright restrictions.

Saracenic fountain on the aqueduct from Solomon's Pools. The causeway, to which the aqueduct forms a parapet on the north side, crosses the Valley of Hinnom just above the Birket es Sultan

Saracenic fountain on the aqueduct from Solomon's Pools. The causeway...

Public domain illustrated book page scan, related to Egypt, free to use, no copyright restrictions image - Picryl description

Some of the odd forms of chiseled stone in the Garden of the Gods, Colo., U.S.A.

Some of the odd forms of chiseled stone in the Garden of the Gods, Col...

Colorado 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

Ashokan Reservoir. Forms for concrete plug, 26 feet thick, in stream-control conduit in Olive Bridge dam. The 6-foot opening at bottom carries the flow of Esopus creek. Contract 3. August 25, 1913.

Ashokan Reservoir. Forms for concrete plug, 26 feet thick, in stream-c...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Limestone rocks, Ajeltûn, Lebanon. In this district, well named Kesrawan (Broken Region) is a chaos of rugged mountains, which in some places assume grotesque and in others grand architectural forms. The belfry of the great Convent of Ajeltûn is shown in the background.

Limestone rocks, Ajeltûn, Lebanon. In this district, well named Kesraw...

Public domain illustrated book page scan, related to Egypt, free to use, no copyright restrictions image - Picryl description

Wallkill South cut-and-cover. Inside steel forms in place with outside forms not set. Contract 15. May 23, 1910.

Wallkill South cut-and-cover. Inside steel forms in place with outside...

Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description

Rondout pressure tunnel. Steel arch forms mounted on traveler with plates removed to permit placing of concrete in haunches. Contract 12. October 10, 1910.

Rondout pressure tunnel. Steel arch forms mounted on traveler with pla...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

The Palace of Hâsbeiya. Scene of a terrible massacre of Christians on June 3rd, 1860. The fountain if Hâsbeiya forms a copious stream which flows into the Hâsbany.

The Palace of Hâsbeiya. Scene of a terrible massacre of Christians on...

Public domain image of Egyptian art, free to use, no copyright restrictions photo - Picryl description

Dutch Gap canal and group of soldiers. Taken after the bank was blown out. On the extreme end a portion of the bank remains, which forms a profile, which the soldiers call Jeff. Davis.

Dutch Gap canal and group of soldiers. Taken after the bank was blown ...

Civil War 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 as... More

Some of the odd forms of chiseled stone in the Garden of the Gods, Colo., U.S.A.

Some of the odd forms of chiseled stone in the Garden of the Gods, Col...

Colorado 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

Many forms of transportation required in large centers of population. New York City.

Many forms of transportation required in large centers of population. ...

Picryl description: Public domain image of a historic building in New York City, free to use, no copyright restrictions.

Dutch Gap canal and group of soldiers. Taken after the bank was blown out. On the extreme end a portion of the bank remains, which forms a profile, which the soldiers call Jeff. Davis.

Dutch Gap canal and group of soldiers. Taken after the bank was blown ...

Picryl description: Public domain image of an American Civil War, military forces and conflict, officer, uniform, free to use, no copyright restrictions.

'Ain Fîjeh. this fountain issues from a cavern with two openings, over one of which there is an arch. It forms at once a rapid stream thirty feet wide and three of four feet deep, which rushes over a rocky bed for eighty yards and then joins the Barada.

'Ain Fîjeh. this fountain issues from a cavern with two openings, over...

Public domain image of Egyptian art, free to use, no copyright restrictions photo - Picryl description

Dutch Gap canal and group of soldiers. Taken after the bank was blown out. On the extreme end a portion of the bank remains, which forms a profile, which the soldiers call Jeff. Davis.

Dutch Gap canal and group of soldiers. Taken after the bank was blown ...

Civil War 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 as... More