Ole Singstad (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ole Singstad" in English language version.

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2web.archive.org

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2fultonhistory.com

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1agdenes.kommune.no

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1books.google.com

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195.139.106.85

Famous People of Agdenes^{[permanent dead link]}, at Agdenes kommune^{[permanent dead link]},

agdenes.kommune.no

About Agdenes Township^{[permanent dead link]}

ancestry.com

archiver.rootsweb.ancestry.com

Saga in Steel and Concrete, pp. 181–190
Saga in Steel and Concrete, pp. 191–202
"Saga in Steel and Concrete: Norwegian Engineers in America". ancestry.com. 1947.
"Saga in Steel and Concrete: Norwegian Engineers in America". 1947.

books.google.com

Bjork, K. (2007). Saga in Steel and Concrete - Norwegian Engineers in America. Read Books. ISBN 978-1-4067-6829-9. Retrieved May 29, 2018.

fultonhistory.com

"Smoke Bombs to be Fired in Motor Tunnel" (PDF). New York Sun. February 10, 1926. p. 26. Retrieved April 16, 2018 – via Fultonhistory.com.
"$48,000,000 Traffic Tunnel Under Hudson Opens To-day". New York Sun. November 12, 1927. pp. 1, 5.

lotsberg.net

"Ingeniør Ole Singstad (1882 - 1969)". lotsberg.net (in Norwegian). Historier.Norway. Archived from the original on 2020-03-22. Retrieved 2009-09-26.

maryland.gov

mdta.maryland.gov

"Baltimore Harbor Tunnel 50th Anniversary". The State of Maryland, Maryland Transportation Authority.

moma.org

The Ammann Singstad Lecture on Infrastructure

nps.gov

npgallery.nps.gov

"National Register Information System – Holland Tunnel (#93001619)". National Register of Historic Places. National Park Service. April 15, 2008. Retrieved May 19, 2018.

nytimes.com

Krebs, Albin (December 9, 1969). "Ole Singstad, 87, Master Builder Of Underwater Tunnels, Is Dead". The New York Times. Retrieved May 29, 2010.
"Engineers Named for 38th St. Tube". The New York Times. November 19, 1933. ISSN 0362-4331. Retrieved March 24, 2018.
"ENGINEERS DEBATE WHY TUNNEL LEAKS; Former and Present Chiefs of Brooklyn-Battery Tube in Disagreement on Seepage". The New York Times. August 28, 1951. ISSN 0362-4331. Archived from the original on March 23, 2018. Retrieved March 22, 2018.
"CITY SOON TO BEGIN TUNNEL TO QUEENS". The New York Times. August 16, 1936. Retrieved April 18, 2018.
"SOLVE VENTILATION OF VEHICULAR TUBE; Gen. Dyer Says That Experts Have Settled Difficult Problem of Hudson Tunnel.AUTO CASES ANALYZEDPhysiological and Psychological Effects of Noxious Fumes from Gasoline Combustion Determined". The New York Times. October 10, 1920. ISSN 0362-4331. Retrieved May 5, 2018.
"PURE AIR IS ASSURED FOR THE VEHICULAR TUNNEL; There Will Be No Danger of Asphyxiation From Motor-Car Monoxide in the Big New Boring Under the North River, as Shown by Remarkable Experiments in Ventilation". The New York Times. February 17, 1924. ISSN 0362-4331. Retrieved May 6, 2018.
"TESTS SHOW SAFETY OF VEHICLE TUNNEL; Ventilating System for Proposed Tube Under HudsonTried Out in Pittsburgh.SMOKE BOMBS EXPLODEDBut Air Remains Pure, as it AlsoDoes When Autos Are RunThrough Test Tube". The New York Times. October 30, 1921. ISSN 0362-4331. Retrieved May 5, 2018.
"STUDY TUBE VENTILATION.; Model of Hudson River Tunnel Being Built by Mining Bureau". The New York Times. April 3, 1921. ISSN 0362-4331. Retrieved May 5, 2018.
"BIG RIVER TOWERS GIVE AIR TO TUBE; Powerful Machinery Is Being Installed on Jersey and Manhattan Shores to Ventilate The Holland Vehicular Tunnel". The New York Times. November 28, 1926. ISSN 0362-4331. Retrieved May 8, 2018.
"TUNNEL AIR CALLED PUREST; Singstad Says Its Monoxide Is Half What Harris Found In Streets". The New York Times. December 9, 1927. ISSN 0362-4331. Retrieved May 10, 2018.
Krebs, Albin (December 9, 1969). "Ole Singstad, 87, Master Builder Of Underwater Tunnels, Is Dead". The New York Times. p. 1. Retrieved May 20, 2010.(subscription required)

web.archive.org

"Ingeniør Ole Singstad (1882 - 1969)". lotsberg.net (in Norwegian). Historier.Norway. Archived from the original on 2020-03-22. Retrieved 2009-09-26.
"ENGINEERS DEBATE WHY TUNNEL LEAKS; Former and Present Chiefs of Brooklyn-Battery Tube in Disagreement on Seepage". The New York Times. August 28, 1951. ISSN 0362-4331. Archived from the original on March 23, 2018. Retrieved March 22, 2018.

worldcat.org

"Engineers Named for 38th St. Tube". The New York Times. November 19, 1933. ISSN 0362-4331. Retrieved March 24, 2018.
"ENGINEERS DEBATE WHY TUNNEL LEAKS; Former and Present Chiefs of Brooklyn-Battery Tube in Disagreement on Seepage". The New York Times. August 28, 1951. ISSN 0362-4331. Archived from the original on March 23, 2018. Retrieved March 22, 2018.
Caro, Robert (1974). The Power Broker: Robert Moses and the Fall of New York. New York: Knopf. ISBN 978-0-394-48076-3. OCLC 834874.
"SOLVE VENTILATION OF VEHICULAR TUBE; Gen. Dyer Says That Experts Have Settled Difficult Problem of Hudson Tunnel.AUTO CASES ANALYZEDPhysiological and Psychological Effects of Noxious Fumes from Gasoline Combustion Determined". The New York Times. October 10, 1920. ISSN 0362-4331. Retrieved May 5, 2018.
"PURE AIR IS ASSURED FOR THE VEHICULAR TUNNEL; There Will Be No Danger of Asphyxiation From Motor-Car Monoxide in the Big New Boring Under the North River, as Shown by Remarkable Experiments in Ventilation". The New York Times. February 17, 1924. ISSN 0362-4331. Retrieved May 6, 2018.
"TESTS SHOW SAFETY OF VEHICLE TUNNEL; Ventilating System for Proposed Tube Under HudsonTried Out in Pittsburgh.SMOKE BOMBS EXPLODEDBut Air Remains Pure, as it AlsoDoes When Autos Are RunThrough Test Tube". The New York Times. October 30, 1921. ISSN 0362-4331. Retrieved May 5, 2018.
"STUDY TUBE VENTILATION.; Model of Hudson River Tunnel Being Built by Mining Bureau". The New York Times. April 3, 1921. ISSN 0362-4331. Retrieved May 5, 2018.
"BIG RIVER TOWERS GIVE AIR TO TUBE; Powerful Machinery Is Being Installed on Jersey and Manhattan Shores to Ventilate The Holland Vehicular Tunnel". The New York Times. November 28, 1926. ISSN 0362-4331. Retrieved May 8, 2018.
"TUNNEL AIR CALLED PUREST; Singstad Says Its Monoxide Is Half What Harris Found In Streets". The New York Times. December 9, 1927. ISSN 0362-4331. Retrieved May 10, 2018.