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Technology Collection (page 6)

Background imageTechnology Collection: Leonard D. Mahon with steel helmet he invented that could be used as shovel, 1917

Leonard D. Mahon with steel helmet he invented that could be used as shovel, 1917. Creator: Harris & Ewing. Leonard D
Leonard D. Mahon with steel helmet he invented that could be used as shovel, 1917

Background imageTechnology Collection: Machine Gun Board of War Department - Tracy Dixon, Brig. Gen. Todd, Newton D. Baker... 1917

Machine Gun Board of War Department - Tracy Dixon, Brig. Gen. Todd, Newton D. Baker... 1917. Creator: Harris & Ewing
Machine Gun Board of War Department - Tracy Dixon, Standing Left; Brig. Gen. Todd, 2nd or 3rd from Left; Newton D. Baker, 4th from Right; Lawrence B. Benet, 3rd from Right; Maj. Gen

Background imageTechnology Collection: Life Saving Suit Worn By T. Aud, 1916. Creator: Harris & Ewing. Life Saving Suit Worn By T

Life Saving Suit Worn By T. Aud, 1916. Creator: Harris & Ewing. Life Saving Suit Worn By T. Aud, 1916
Life Saving Suit Worn By T. Aud, 1916

Background imageTechnology Collection: Et dire que maintenant, voilà...tous les voyageurs qui nous passent devant le nez!, 19th century

Et dire que maintenant, voilà...tous les voyageurs qui nous passent devant le nez!, 19th century
Et dire que maintenant, voila...tous les voyageurs qui nous passent devant le nez!, 19th century. Men with exaggerated noses watching steam train from outside the post riders office

Background imageTechnology Collection: Impressions et compressions de voyage, 19th century. Creator: Honore Daumier

Impressions et compressions de voyage, 19th century. Creator: Honore Daumier
Impressions et compressions de voyage, 19th century. Early railway passengers: We're done for! No, it's well known that when the convoy moves forward the travellers move backwards

Background imageTechnology Collection: Mergenthaler, Ottmar, 2nd Linotype Machine with Band, Invented By Him; 3rd Design He... 1917

Mergenthaler, Ottmar, 2nd Linotype Machine with Band, Invented By Him; 3rd Design He... 1917. Creator: Harris & Ewing
2nd Linotype Machine with Band, invented By Ottmar Mergenthaler; 3rd design he invented at Smithsonian, 1917. The linotype machine was the first device that could easily

Background imageTechnology Collection: Mountaineers - Mountain Women, 1913. Creator: Harris & Ewing. Mountaineers - Mountain Women, 1913

Mountaineers - Mountain Women, 1913. Creator: Harris & Ewing. Mountaineers - Mountain Women, 1913
Mountaineers - Mountain Women, 1913. Woman with spinning wheel

Background imageTechnology Collection: Mountaineers - Mountain Women, 1913. Creator: Harris & Ewing. Mountaineers - Mountain Women, 1913

Mountaineers - Mountain Women, 1913. Creator: Harris & Ewing. Mountaineers - Mountain Women, 1913
Mountaineers - Mountain Women, 1913. Old woman with spinning wheel

Background imageTechnology Collection: National Guard of D.C. - Field Tactics, 1915. Creator: Harris & Ewing. National Guard of D.C

National Guard of D.C. - Field Tactics, 1915. Creator: Harris & Ewing. National Guard of D.C. - Field Tactics, 1915
National Guard of Washington D.C. - Field Tactics, 1915. Photographer with camera

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commission - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, Frankenfield; Rep. Curry; Bowman, 1917

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, Bowman; Frankenfield; [Robert] Peary [centre]; Smith; Fred Kelly, 1917

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, 1917

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, Ripley Bowman, 1917. Signs: This Flying Boat has been 700 hours in the Air

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, Rep. Kahn; Unidentified; Asst. Sec. Ingraham; Adm. [Robert] Peary; Rep. Lieb; Prof

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, Rep. Kahn; Unidentified Back; Asst. Sec. Ingraham; Adm

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, E.H. Smith; Rep. Kahn; Rep. Lieb, 1917

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, at Center Is Group Too Huddled To Identify; Capt. Taylor; Miss Marie Peary; Byron R

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commn. - Curtiss Hydroaeroplane or Flying Boat Exhibited Near House Office Building, 1917

Background imageTechnology Collection: National Aero Coast Patrol Commn. - Curtiss Biplane 2 Engines, with Floats, Exhibited... 1917

National Aero Coast Patrol Commn. - Curtiss Biplane 2 Engines, with Floats, Exhibited... 1917. Creator: Harris & Ewing
National Aero Coast Patrol Commission - Curtiss Biplane 2 Engines, with Floats, Exhibited at S.O.B. [Senate Office Building?], 1917

Background imageTechnology Collection: Curtiss Biplane 2 Engines, with Floats... 1917. Creator: Harris & Ewing

Curtiss Biplane 2 Engines, with Floats... 1917. Creator: Harris & Ewing. Curtiss Biplane 2 Engines, with Floats
National Aero Coast Patrol Commission - Curtiss Biplane 2 Engines, with Floats, Exhibited at S.O.B. Sen. Ben Tillman Climbing Into Plane; Augustus Post at Right, 1917

Background imageTechnology Collection: Curtiss Biplane 2 Engines, with Floats... 1917. Creator: Harris & Ewing

Curtiss Biplane 2 Engines, with Floats... 1917. Creator: Harris & Ewing. Curtiss Biplane 2 Engines, with Floats
National Aero Coast Patrol Commission - Curtiss Biplane 2 Engines, with Floats, Exhibited at S.O.B. Sen. Ben Tillman Climbing Into Plane; Augustus Post at Right, 1917

Background imageTechnology Collection: Army Aviation, College Park Aviation Field - Wright Brothers Plane, Wrecked, 1911

Army Aviation, College Park Aviation Field - Wright Brothers Plane, Wrecked, 1911. Creator: Harris & Ewing
Army Aviation, College Park Aviation Field - Wright Brothers Plane, Wrecked, 1911. [Early test flights in Maryland]

Background imageTechnology Collection: Paul Peck, Commercial Aviator - In Curtiss Type Plane; College Park, 1911. Creator: Harris & Ewing

Paul Peck, Commercial Aviator - In Curtiss Type Plane; College Park, 1911. Creator: Harris & Ewing
Paul Peck, Commercial Aviator - In Curtiss Type Plane; College Park, 1911. Early US aviator who died in a plane crash

Background imageTechnology Collection: Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing

Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing
Wright Brothers Airplane, Etc - Harry Atwood, 1911. [US aviation pineer, engineer and inventor Atwood was chief flight instructor for William Starling Burgess whose Burgess Company built a variety of

Background imageTechnology Collection: Aviator Harry Atwood, in Plane with Leo Stevens, 1911. Creator: Harris & Ewing

Aviator Harry Atwood, in Plane with Leo Stevens, 1911. Creator: Harris & Ewing
Aviator Harry Atwood, in Plane with Leo Stevens, 1911. [US aviation pineer, engineer and inventor Atwood was chief flight instructor for William Starling Burgess whose Burgess Company built a variety

Background imageTechnology Collection: Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing

Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing
Wright Brothers Airplane, Etc - Harry Atwood, 1911. [US aviation pineer, engineer and inventor Atwood was chief flight instructor for William Starling Burgess whose Burgess Company built a variety of

Background imageTechnology Collection: Flights And Tests of Rex Smith Plane Flown By Anthony Jannus - The Plane with Rufus R... 1912

Flights And Tests of Rex Smith Plane Flown By Anthony Jannus - The Plane with Rufus R... 1912. Creator: Harris & Ewing
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - The Plane with Rufus R. Bermann, Wireless Operator, And Fred Aubert, 1912. Early aviation, USA

Background imageTechnology Collection: Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912

Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912. Creator: Harris & Ewing
Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912. Early aviation, USA. Chicago Battery Company - Duro Dry Storage Battery for Ignition & Lighting

Background imageTechnology Collection: Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912

Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912. Creator: Harris & Ewing
Anthony Jannus - Flights And Tests of Rex Smith Plane Flown By Jannus. The Plane, 1912. Early aviation, USA. Chicago Battery Company - Duro Dry Storage Battery for Ignition & Lighting

Background imageTechnology Collection: Curtiss Airplane - J.A.D. McCurdy, Aviator, 1912. Creator: Harris & Ewing. Curtiss Airplane - J.A.D

Curtiss Airplane - J.A.D. McCurdy, Aviator, 1912. Creator: Harris & Ewing. Curtiss Airplane - J.A.D
Curtiss Airplane - J.A.D. McCurdy, Aviator, 1912. John Alexander Douglas McCurdy, Canadian aviation pioneer, Lieutenant Governor of Nova Scotia

Background imageTechnology Collection: Bureau of Mines, low temperature laboratories, between 1905 and 1945. Creator: Harris & Ewing

Bureau of Mines, low temperature laboratories, between 1905 and 1945. Creator: Harris & Ewing
Bureau of Mines, low temperature laboratories, between 1905 and 1945. The United States Bureau of Mines (USBM) was the primary US government agency conducting scientific research

Background imageTechnology Collection: Bureau of Mines Interior Dept. between 1910 and 1920. Creator: Harris & Ewing

Bureau of Mines Interior Dept. between 1910 and 1920. Creator: Harris & Ewing. Bureau of Mines Interior Dept
Bureau of Mines Interior Dept. [Washington, DC], between 1910 and 1920. Man using viscosimeter, instrument used to measure the viscosity of a fluid

Background imageTechnology Collection: Interior Dept. - Bureau of Mines, between 1910 and 1920. Creator: Harris & Ewing. Interior Dept

Interior Dept. - Bureau of Mines, between 1910 and 1920. Creator: Harris & Ewing. Interior Dept
Interior Dept. - Bureau of Mines, [Washington, DC], between 1910 and 1920. Scientist using a bunsen burner to heat a glass instrument

Background imageTechnology Collection: Bureau of Mines, Dept. of Int. between 1910 and 1920. Creator: Harris & Ewing

Bureau of Mines, Dept. of Int. between 1910 and 1920. Creator: Harris & Ewing. Bureau of Mines, Dept. of Int
Bureau of Mines, Dept. of Int. between 1910 and 1920. Man placing samples in a furnace. The United States Bureau of Mines (USBM)

Background imageTechnology Collection: P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920

P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing
P.O. Dept. between 1910 and 1920. USA. Women operating Union Special sewing machines

Background imageTechnology Collection: P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920

P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing
P.O. Dept. between 1910 and 1920. USA. Older woman working in a factory

Background imageTechnology Collection: P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920

P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing
P.O. Dept. between 1910 and 1920. USA. Women operating sewing machines

Background imageTechnology Collection: P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920

P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing. P.O. Dept. between 1910 and 1920. Creator: Harris & Ewing
P.O. Dept. between 1910 and 1920. USA

Background imageTechnology Collection: Home Economics Section, between 1910 and 1920. Creator: Harris & Ewing

Home Economics Section, between 1910 and 1920. Creator: Harris & Ewing. Home Economics Section, between 1910 and 1920
Home Economics Section, between 1910 and 1920. USA. Women in an industrial kitchen

Background imageTechnology Collection: Radio, 1919. Creator: Harris & Ewing. Radio, 1919. Creator: Harris & Ewing

Radio, 1919. Creator: Harris & Ewing. Radio, 1919. Creator: Harris & Ewing
Radio, 1919. USA. Sailor typing at ticker tape machine: Leased wire telegram received at Navy Department...New York Oct 23 1919, I P Bemberg

Background imageTechnology Collection: Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920

Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920. Creator: Harris & Ewing
Radio, between 1910 and 1920. Ticker tape machine, USA

Background imageTechnology Collection: Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920

Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920. Creator: Harris & Ewing
Radio, between 1910 and 1920. USA

Background imageTechnology Collection: Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920

Radio, between 1910 and 1920. Creator: Harris & Ewing. Radio, between 1910 and 1920. Creator: Harris & Ewing
Radio, between 1910 and 1920. USA. Man in naval uniform wearing headphones, writing on a notepad headed Radiogram

Background imageTechnology Collection: Training Division, between 1910 and 1920. Creator: Harris & Ewing

Training Division, between 1910 and 1920. Creator: Harris & Ewing. Training Division, between 1910 and 1920
Training Division, between 1910 and 1920. Women office workers, USA. Note electric fans. Notice reads: Instructions for Care and Maintenance, Globe Automatic Sprinkler Company'

Background imageTechnology Collection: Dr. Floyd W. Willis; A peep-in at an X-ray examination in the offices of Dr. Floyd W... 1925

Dr. Floyd W. Willis; A peep-in at an X-ray examination in the offices of Dr. Floyd W... 1925. Creator: Unknown
Dr. Floyd W. Willis; A peep-in at an X-ray examination in the offices of Dr. Floyd W. Willis, electro-therapist and X-ray expert, 1925

Background imageTechnology Collection: Evelyn Moran, between 1910 and 1920. Creator: Harris & Ewing. Evelyn Moran, between 1910 and 1920

Evelyn Moran, between 1910 and 1920. Creator: Harris & Ewing. Evelyn Moran, between 1910 and 1920
Evelyn Moran, between 1910 and 1920. Woman writing on a pad of paper, with Morse key on the right

Background imageTechnology Collection: Evelyn Moran, between 1910 and 1920. Creator: Harris & Ewing. Evelyn Moran, between 1910 and 1920

Evelyn Moran, between 1910 and 1920. Creator: Harris & Ewing. Evelyn Moran, between 1910 and 1920
Evelyn Moran, between 1910 and 1920. Woman writing on a pad of paper, man operating signalling device/Morse key?

Background imageTechnology Collection: Comforts Committee of Navy League, between 1910 and 1920. Creator: Harris & Ewing

Comforts Committee of Navy League, between 1910 and 1920. Creator: Harris & Ewing
Comforts Committee of Navy League, between 1910 and 1920. USA. First World War: women using circular knitting machines to produce socks for sailors



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