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Experimental Collection

Background imageExperimental Collection: Wilbur and Orville Wright with Flyer II at Huffman Prairie, Dayton, Ohio, USA, May 1

Wilbur and Orville Wright with Flyer II at Huffman Prairie, Dayton, Ohio, USA, May 1, 1904. The Wrights had a much more difficult time testing their aircraft at Huffman Prairie than at Kill Devil

Background imageExperimental Collection: Wright Brothers Glider Tests, Kill Devil Hills, North Carolina, USA, October 10, 1902

Wright Brothers Glider Tests, Kill Devil Hills, North Carolina, USA, October 10, 1902. Historic photo of the Wright brothers third test glider being launched

Background imageExperimental Collection: Siege Operations at Chatham: destruction of the stockade by gun-cotton and powder, 1871

Siege Operations at Chatham: destruction of the stockade by gun-cotton and powder, 1871. Creator: Unknown
Siege Operations at Chatham: destruction of the stockade by gun-cotton and powder, 1871. British Army training. Illustration of '...the blowing down of a stockade

Background imageExperimental Collection: Siege Operations at Chatham: stockade prepared for blowing up with gun-cotton and powder, 1871

Siege Operations at Chatham: stockade prepared for blowing up with gun-cotton and powder, 1871. Creator: Unknown
Siege Operations at Chatham: stockade prepared for blowing up with gun-cotton and powder, 1871. British Army training. Illustration of '...the blowing down of a stockade

Background imageExperimental Collection: Nakajima Mamoru 11, Radial 14 Engine, Circa World War II. Creator: Fuji Koku Keiki

Nakajima Mamoru 11, Radial 14 Engine, Circa World War II. Creator: Fuji Koku Keiki
Nakajima provided Japan with its first large radials by building licensed Bristols beginning in the late 1920s, and Gnome-Rhone engines beginning in 1936

Background imageExperimental Collection: Portrait of Arthur Lett-Haines, 1920. Creator: Frances Hodgkins

Portrait of Arthur Lett-Haines, 1920. Creator: Frances Hodgkins
Portrait of Arthur Lett-Haines, 1920

Background imageExperimental Collection: Sir Charles Wheatstone, professor of Experimental Philosophy, King's College, 1868. Creator: Unknown

Sir Charles Wheatstone, professor of Experimental Philosophy, King's College, 1868. Creator: Unknown
Sir Charles Wheatstone, professor of Experimental Philosophy, King's College, 1868. Engraving from a photograph by Messrs Hills and Saunders

Background imageExperimental Collection: Experiments with Norton's Patent Tube-Wells, used by our army in Abyssinia, 1868. Creator: Unknown

Experiments with Norton's Patent Tube-Wells, used by our army in Abyssinia, 1868. Creator: Unknown
Experiments with Norton's Patent Tube-Wells, used by our army in Abyssinia, 1868. An invention 'adopted by the Royal Engineers for the ready supply of water to British troops in Abyssinia...It is an

Background imageExperimental Collection: Experiments with l'Extincteur on the Thames Embankment before the Prince of Wales, 1868

Experiments with l'Extincteur on the Thames Embankment before the Prince of Wales, 1868. Creator: C. R
Experiments with l'Extincteur on the Thames Embankment [in London] before the Prince of Wales, 1868. 'The Prince and the Duke of Sutherland are known to take a particular interest in the organisation

Background imageExperimental Collection: Experiments at Shoeburyness, ...Plymouth Breakwater Target: examining the target after firing

Experiments at Shoeburyness, ...Plymouth Breakwater Target: examining the target after firing, 1868. Creator: C. R
Experiments at Shoeburyness on the Plymouth Breakwater Target: examining the target after firing, 1868. Testing artillery '...on different iron structures designed for land fortifications...One of

Background imageExperimental Collection: Experiments at Shoeburyness on the Plymouth Breakwater Target: the splinter-proofs, 1868

Experiments at Shoeburyness on the Plymouth Breakwater Target: the splinter-proofs, 1868. Creator: Unknown
Experiments at Shoeburyness [Southend, Essex] on the Plymouth Breakwater Target: the splinter-proofs, 1868. Testing artillery '...on different iron structures designed for land fortifications...[The]

Background imageExperimental Collection: Sections of the hull of H.M.S. Terpsichore, showing effect of the torpedo explosion at Chatham

Sections of the hull of H.M.S. Terpsichore, showing effect of the torpedo explosion at Chatham, 1865 Creator: Unknown
Sections of the hull of H.M.S. Terpsichore, showing effect of the torpedo explosion at Chatham, 1865. Official drawings...by Mr. P

Background imageExperimental Collection: Experiments with torpedo-shells at Chatham: blowing-up of the Terpsichore by a 75-pounder, 1865

Experiments with torpedo-shells at Chatham: blowing-up of the Terpsichore by a 75-pounder, 1865. Creator: Unknown
Experiments with torpedo-shells at Chatham: blowing-up of the Terpsichore by a 75-pounder, 1865. Preparations were now made for destroying the Terpsichore, 18-gun sailing-frigate

Background imageExperimental Collection: Experiments with torpedo-shells at Chatham: explosion of a 440-pounder, 1865. Creator: Unknown

Experiments with torpedo-shells at Chatham: explosion of a 440-pounder, 1865. Creator: Unknown
Experiments with torpedo-shells at Chatham: explosion of a 440-pounder, 1865....Mr. Donald M'Kay, the extensive shipowner, of Boston

Background imageExperimental Collection: Eugene Lauste recording the first combined moving image and sound, c1905, (1935)

Eugene Lauste recording the first combined moving image and sound, c1905, (1935). Eugene Lauste may be seen already experimenting with " Talkies"

Background imageExperimental Collection: Siege Operations at Chatham: single sap, with shield, 1871. Creator: Unknown

Siege Operations at Chatham: single sap, with shield, 1871. Creator: Unknown
Siege Operations at Chatham: single sap, with shield, 1871.British Army training. 'The operations of a party of sappers, under Lieutenant de Villamil

Background imageExperimental Collection: Siege Operations at Chatham: sappers working behind sap roller, 1871. Creator: Unknown

Siege Operations at Chatham: sappers working behind sap roller, 1871. Creator: Unknown
Siege Operations at Chatham: sappers working behind sap roller, 1871. British Army training. 'The operations of a party of sappers, under Lieutenant de Villamil

Background imageExperimental Collection: Siege Operations at Chatham: necklace of gun-cotton round a beam, 1871. Creator: Unknown

Siege Operations at Chatham: necklace of gun-cotton round a beam, 1871. Creator: Unknown
Siege Operations at Chatham: necklace of gun-cotton round a beam, 1871. British Army training. Illustration of preparations for '...the blowing down of a stockade

Background imageExperimental Collection: Siege Operations at Chatham: lighting the fuse for the powder-bags, 1871. Creator: Unknown

Siege Operations at Chatham: lighting the fuse for the powder-bags, 1871. Creator: Unknown
Siege Operations at Chatham: lighting the fuse for the powder-bags, 1871. British Army training. Illustration of preparations for '...the blowing down of a stockade

Background imageExperimental Collection: Siege Operations at Chatham: festoon of gun-cotton on the stockade, 1871. Creator: Unknown

Siege Operations at Chatham: festoon of gun-cotton on the stockade, 1871. Creator: Unknown
Siege Operations at Chatham: festoon of gun-cotton on the stockade, 1871. British Army training. Illustration of preparations for '...the blowing down of a stockade

Background imageExperimental Collection: Experiments with the Armstrong 600-pounder against the Warrior floating target, 1864

Experiments with the Armstrong 600-pounder against the Warrior floating target, 1864. Creator: Unknown
Section of the Warrior floating target, showing the hole made by the 600-pound shell and the displacement of the upper plate, 1864

Background imageExperimental Collection: Experiments with the Armstrong 600-pounder against the Warrior floating target, 1864

Experiments with the Armstrong 600-pounder against the Warrior floating target, 1864. Creator: Unknown
Experiments with the Armstrong 600-pounder against the Warrior floating target, 1864. The sight presented by the target when struck was very grand

Background imageExperimental Collection: Experiments with Captain Fowke's pontoon bridge on the Serpentine, 1860. Creator: Unknown

Experiments with Captain Fowke's pontoon bridge on the Serpentine, 1860. Creator: Unknown
Experiments with Captain Fowke's pontoon bridge on the Serpentine, [London], 1860. The pontoon to be tested consists of an oblong framework of wood and iron

Background imageExperimental Collection: Musical theories of Pythagoras, 1492. Creator: Unknown

Musical theories of Pythagoras, 1492. Creator: Unknown
Musical theories of Pythagoras, 1492. Men playing musical instruments and making sounds. At top left, an anvil is struck with hammers

Background imageExperimental Collection: The Winans Ocean Steamer as she will appear at sea, 1858. Creator: Smyth

The Winans Ocean Steamer as she will appear at sea, 1858. Creator: Smyth
The Winans Ocean Steamer as she will appear at sea, 1858. The Cigar Ship, a singular vessel which was launched near the Ferry Bay at Baltimore

Background imageExperimental Collection: The Winans Steam-vessel - end view, 1858. Creator: Unknown

The Winans Steam-vessel - end view, 1858. Creator: Unknown
The Winans Steam-vessel - end view, 1858. The Cigar Ship, a singular vessel which was launched near the Ferry Bay at Baltimore

Background imageExperimental Collection: Experiments made with Stevens's Bread-making Machine at Marylebone Workhouse, 1858. Creator: Unknown

Experiments made with Stevens's Bread-making Machine at Marylebone Workhouse, 1858. Creator: Unknown
Experiments made with Stevens's Bread-making Machine at Marylebone Workhouse, 1858. Mr. Stevens, the inventor of the A B C bread-making machine, is a practical baker

Background imageExperimental Collection: Fremantle in Western Australia: Rottnest Island, the Proposed New Convict Establishment... 1857

Fremantle in Western Australia: Rottnest Island, the Proposed New Convict Establishment... 1857. Creator: Unknown
Fremantle in Western Australia: Rottnest Island, the Proposed New Convict Establishment, in the distance, 1857. By reference to the report of the important measure introduced to the House of

Background imageExperimental Collection: Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing

Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing
Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Related to Samuel Pierpont Langley, Secretary, Smithsonian Institute

Background imageExperimental Collection: Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing

Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing
Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Related to Samuel Pierpont Langley, Secretary, Smithsonian Institute

Background imageExperimental Collection: Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing

Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Creator: Harris & Ewing
Experimental Tandem Biplane On Potomac Embodying Langley Principles, 1917. Related to Samuel Pierpont Langley, Secretary, Smithsonian Institute

Background imageExperimental 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. Man and woman with scientific apparatus

Background imageExperimental 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 imageExperimental Collection: Model airplane, between 1910 and 1920. Creator: Harris & Ewing

Model airplane, between 1910 and 1920. Creator: Harris & Ewing. Model airplane, between 1910 and 1920
Model airplane, between 1910 and 1920. USA. Scientific apparatus with propellers

Background imageExperimental Collection: Laboratory, between 1909 and 1914. Creator: Harris & Ewing. Laboratory, between 1909 and 1914

Laboratory, between 1909 and 1914. Creator: Harris & Ewing. Laboratory, between 1909 and 1914. Creator: Harris & Ewing
Laboratory, between 1909 and 1914. USA. Man on left using a telephone, man on right wearing headphones and operating scientific apparatus

Background imageExperimental Collection: City experiment in gardening, New York City, c1922. Creator: Frances Benjamin Johnston

City experiment in gardening, New York City, c1922. Creator: Frances Benjamin Johnston
City experiment in gardening, New York City, c1922. Three men, in foreground, in garden project in New York City park

Background imageExperimental Collection: City experiment in gardening, New York City, c1922. Creator: Frances Benjamin Johnston

City experiment in gardening, New York City, c1922. Creator: Frances Benjamin Johnston
City experiment in gardening, New York City, c1922. Group of people watching gardener at work in garden project in New York City park

Background imageExperimental Collection: Frank G. Carpenter at an experimental farm, between c1900 and 1916. Creator: Unknown

Frank G. Carpenter at an experimental farm, between c1900 and 1916. Creator: Unknown
Frank G. Carpenter at an experimental farm, between c1900 and 1916

Background imageExperimental Collection: Hallett's pedigree nursery wheat, 1862. Creator: Unknown

Hallett's pedigree nursery wheat, 1862. Creator: Unknown
Hallett's pedigree nursery wheat, 1862. The original ear, A, was selected in 1857 from a large crop of "nursery" wheat, not because of its great size

Background imageExperimental Collection: Members of the experimental staff... North American Aviation, Inc, plant, Inglewood, Calif. 1942

Members of the experimental staff... North American Aviation, Inc, plant, Inglewood, Calif. 1942
Member[s] of the experimental staff at the North American Aviation, Inc. plant, observe wind tunnel tests on an accurate scale model of the B-25 (" Billy Mitchell" ) bomber, Inglewood

Background imageExperimental Collection: An experimental scale model of the B-25... North American Aviation, Inc. Inglewood, Calif. 1942

An experimental scale model of the B-25... North American Aviation, Inc. Inglewood, Calif. 1942
An experimental scale model of the B-25 plane is prepared for wind tunnel tests in the plant of North American Aviation, Inc. Inglewood, Calif. This plant produced the B-25 bomber

Background imageExperimental Collection: Cultivating tobacco at the Puerto Rico Reconstruction Administration... Puerto Rico, 1941

Cultivating tobacco at the Puerto Rico Reconstruction Administration... Puerto Rico, 1941. Creator: Jack Delano
Cultivating tobacco at the [Puerto Rico Reconstruction Administration] experimental area, vicinity of Cayey, Puerto Rico

Background imageExperimental Collection: 1940 Bedford MWD experimental truck. Creator: Unknown

1940 Bedford MWD experimental truck. Creator: Unknown
1940 Bedford MWD experimental truck

Background imageExperimental Collection: Inflatable Station Concept, 1961. Creator: NASA

Inflatable Station Concept, 1961. Creator: NASA
Inflatable Station Concept, 1961. Unlike many other early space station concepts, this design actually made it out of the concept phase and into production, though no models were ever flown

Background imageExperimental Collection: Henry Sachs with Robert Goddards Rocket in New Mexico, USA, 1930. Creator: NASA

Henry Sachs with Robert Goddards Rocket in New Mexico, USA, 1930. Creator: NASA
Henry Sachs with Robert Goddards Rocket in New Mexico, USA, 1930. Henry Sachs, machinist, is shown with Dr. Robert H. Goddards rocket used in the first flight at Roswell, New Mexico on December 30

Background imageExperimental Collection: American physicist James Van Allen with Pioneer 4, USA, 1950s. Creator: Unknown

American physicist James Van Allen with Pioneer 4, USA, 1950s. Creator: Unknown
American physicist James Van Allen with Pioneer 4, USA, 1950s. Professor James Van Allen of the University of Iowa is best known for his discoverery in 1958 of the two belts of charged particles in

Background imageExperimental Collection: Orville Wright tests his glider at Kitty Hawk, North Carolina, USA, 1911. Creator: NASA

Orville Wright tests his glider at Kitty Hawk, North Carolina, USA, 1911. Creator: NASA
Orville Wright tests his glider at Kitty Hawk, North Carolina, USA, 1911. On October 24, 1911 Orville tested a new glider and broke all the previous gliding records by actually soaring

Background imageExperimental Collection: Bell X-14A Vertical Take-off and Landing aircraft, USA, 1962. Creator: NASA

Bell X-14A Vertical Take-off and Landing aircraft, USA, 1962. Creator: NASA
Bell X-14A Vertical Take-off and Landing aircraft, USA, 1962. Landing on the lunar surface is simulated by the NASA Ames Research Centers Bell X-14A VTOL aircraft

Background imageExperimental Collection: Langley Quarter-scale Aerodrome, 1903. Creator: Smithsonian Institution

Langley Quarter-scale Aerodrome, 1903. Creator: Smithsonian Institution
Model of the unpiloted, tandem-wing experimental aircraft built and tested by Samuel P. Langley, powered by a five-cylinder radial internal combustion gasoline engine of about 3.2 horsepower

Background imageExperimental Collection: Curtiss Modified Model L, V-8 Engine, Circa 1910. Creator

Curtiss Modified Model L, V-8 Engine, Circa 1910. Creator
Curtiss was one of the most successful early American aircraft engine manufacturers. The first Curtiss engines were air cooled but, to achieve higher power

Background imageExperimental Collection: Huck Press experimental plate proof, 1957. Creator: Bureau of Engraving and Printing

Huck Press experimental plate proof, 1957. Creator: Bureau of Engraving and Printing
Huck Press experimental plate proof, 1957. During the 1950s and 1960s, the Bureau of Engraving and Printing adopted state-of-the-art printing technologies that transformed stamp production

Background imageExperimental Collection: Presidential Series Washington experimental plate proof, 1938

Presidential Series Washington experimental plate proof, 1938. The Bureau of Engraving and Printing produced this experimental plate

Background imageExperimental Collection: Figure 26: Expression of painful attention and attention, attentive gaze

Figure 26: Expression of painful attention and attention, attentive gaze. 1854-56, printed 1862

Background imageExperimental Collection: Figure 53: Whimpering and false laughter, 1854-56, printed 1862

Figure 53: Whimpering and false laughter, 1854-56, printed 1862

Background imageExperimental Collection: Figure 39: The attention attracted by an object that provokes lascivious

Figure 39: The attention attracted by an object that provokes lascivious ideas and desires. 1854-56, printed 1862

Background imageExperimental Collection: Figure 9: A study of m. frontalis in maximum contraction, 1854-56, printed 1862

Figure 9: A study of m. frontalis in maximum contraction, 1854-56, printed 1862

Background imageExperimental Collection: Figure 15: Meditation, mental concentration, 1854-56, printed 1862

Figure 15: Meditation, mental concentration, 1854-56, printed 1862

Background imageExperimental Collection: Figure 27: Expression proportionally more pained, 1854-56, printed 1862

Figure 27: Expression proportionally more pained, 1854-56, printed 1862

Background imageExperimental Collection: Figure 81: Lady Macbeth, moderate expression of cruelty, 1854-56, printed 1862

Figure 81: Lady Macbeth, moderate expression of cruelty, 1854-56, printed 1862

Background imageExperimental Collection: Figure 42: Gaiety expressed by the ideas of lustfulness, cynicism, and le

Figure 42: Gaiety expressed by the ideas of lustfulness, cynicism, and lewdness. 1854-56, printed 1862

Background imageExperimental Collection: Figure 10: Showing the expressive lines of m. frontalis in a young girl, 1854-56

Figure 10: Showing the expressive lines of m. frontalis in a young girl, 1854-56, printed 1862

Background imageExperimental Collection: Figure 55: Astonishment badly rendered by the subject: a ridiculous and i

Figure 55: Astonishment badly rendered by the subject: a ridiculous and inane expression. 1854-56, printed 1862

Background imageExperimental Collection: Figure 21: Painful recollection and recollection or calling something to

Figure 21: Painful recollection and recollection or calling something to mind, 1854-56, printed 1862

Background imageExperimental Collection: Figure 71: Same head as in Plate 70, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 71: Same head as in Plate 70, 1854-56, printed 1862. Creators: Duchenne de Boulogne, Adrien Alban Tournachon
Figure 71: Same head as in Plate 70, 1854-56, printed 1862

Background imageExperimental Collection: Figure 57: Astonishment, stupefaction, amazement, 1854-56, printed 1862

Figure 57: Astonishment, stupefaction, amazement, 1854-56, printed 1862

Background imageExperimental Collection: Figure 73: Head of Niobe, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 73: Head of Niobe, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Figure 73: Head of Niobe, 1854-56, printed 1862

Background imageExperimental Collection: Figure 12: A study of the contraction of and the expression produced by t

Figure 12: A study of the contraction of and the expression produced by the superior part of m. orbicularis oculi, 1854-56, printed 1862

Background imageExperimental Collection: Figure 47: A suggestion of this same weeping, 1854-56, printed 1862

Figure 47: A suggestion of this same weeping, 1854-56, printed 1862

Background imageExperimental Collection: Figure 56: Surprise, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 56: Surprise, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Figure 56: Surprise, 1854-56, printed 1862

Background imageExperimental Collection: Figure 63: Expression of terror, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 63: Expression of terror, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Figure 63: Expression of terror, 1854-56, printed 1862

Background imageExperimental Collection: Figure 34: Grimace, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 34: Grimace, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Figure 34: Grimace, 1854-56, printed 1862

Background imageExperimental Collection: Figure 4: The face in repose of a young man, 1854-56, printed 1862

Figure 4: The face in repose of a young man, 1854-56, printed 1862

Background imageExperimental Collection: Figure 3: The face of an old man... photographed in repose. 1854-56, printed 1862

Figure 3: The face of an old man... photographed in repose. 1854-56, printed 1862

Background imageExperimental Collection: Figure 83: Lady Macbeth, ferocious cruelty, 1854-56, printed 1862

Figure 83: Lady Macbeth, ferocious cruelty, 1854-56, printed 1862

Background imageExperimental Collection: Figure 82: Lady Macbeth, strong expression of cruelty, 1854-56, printed 1862

Figure 82: Lady Macbeth, strong expression of cruelty, 1854-56, printed 1862

Background imageExperimental Collection: Figure 8: Contraction of the right m. frontalis. 1854-56, printed 1862

Figure 8: Contraction of the right m. frontalis. 1854-56, printed 1862

Background imageExperimental Collection: Figure 24: Extreme pain to the point of exhaustion, the head of Christ an

Figure 24: Extreme pain to the point of exhaustion, the head of Christ and memory of love or ecstatic gaze. 1854-56, printed 1862

Background imageExperimental Collection: Icono-photographique. Mecanisme de la Physionomie Humaine. Fig

Icono-photographique. Mecanisme de la Physionomie Humaine. Fig. 65, 1854-56, printed 1862

Background imageExperimental Collection: Figure 19: Suffering, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Figure 19: Suffering, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Figure 19: Suffering, 1854-56, printed 1862

Background imageExperimental Collection: Figure 48: Mild weeping, pity and feeble false laughter, 1854-56, printed 1862

Figure 48: Mild weeping, pity and feeble false laughter, 1854-56, printed 1862

Background imageExperimental Collection: Figure 25: Not an expression of pain, 1854-56, printed 1862

Figure 25: Not an expression of pain, 1854-56, printed 1862

Background imageExperimental Collection: Faradisation du muscle frontal, 1854-56, printed 1862. Creators: Duchenne de Boulogne

Faradisation du muscle frontal, 1854-56, printed 1862. Creators: Duchenne de Boulogne
Faradisation du muscle frontal, 1854-56, printed 1862

Background imageExperimental Collection: Figure 52: Voluntary retraction of the lower lip, 1854-56, printed 1862

Figure 52: Voluntary retraction of the lower lip, 1854-56, printed 1862

Background imageExperimental Collection: Figure 54: Voluntary lowering of the lower jaw, 1854-56, printed 1862

Figure 54: Voluntary lowering of the lower jaw, 1854-56, printed 1862



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