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Radio, between 1910 and 1920. Creator: Harris & Ewing
 
Radio, between 1910 and 1920. Creator: Harris & Ewing
 
Radio, between 1910 and 1920. Creator: Harris & Ewing
 
Radio, 1919. Creator: Harris & Ewing
 
Home Economics Section, between 1910 and 1920. Creator: Harris & Ewing
 
Home Economics Section, between 1910 and 1920. Creator: Harris & Ewing
 
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. Creator: Harris & Ewing
 
P.O. Dept., between 1910 and 1920. Creator: Harris & Ewing
 
Bureau of Mines, Dept. of Int., between 1910 and 1920. Creator: Harris & Ewing
 
Interior Dept. - Bureau of Mines, between 1910 and 1920. Creator: Harris & Ewing
 
Bureau of Mines Interior Dept., between 1910 and 1920. Creator: Harris & Ewing
 
Bureau of Mines, low temperature laboratories, between 1905 and 1945. Creator: Harris & Ewing
 
Curtiss Airplane - Tests of Curtiss Plane For Army, General Views, 1912. Creator: Harris & Ewing
 
Curtiss Airplane - Tests of Curtiss Plane For Army, General Views, 1912. Creator: Harris & Ewing
 
Curtiss Airplane - J.A.D. McCurdy, Aviator, 1912. Creator: Harris & Ewing
 
Curtiss Airplane - Tests of Curtiss Plane For Army, 1912. Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Tests, 1912. Creator: Harris & Ewing
 
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. Creator: Harris & Ewing
 
Flights And Tests of Rex Smith Plane Flown By Anthony Jannus - The Plane with Rufus R..., 1912. Creator: Harris & Ewing
 
Senorita Lenore Riviero [sic] with Anthony Jannus; In Rex Smith Aeroplane, 1912. Creator: Harris & Ewing
 
Flights And Tests of Rex Smith Plane Flown By Anthony Jannus; in plane with Miss Laura Merriam, 1912 Creator: Harris & Ewing
 
Flights And Tests of Rex Smith Plane Flown By Anthony Jannus; in plane with Miss Laura Merriam, 1912 Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Flights of Plane, 1912. Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Flights of Plane, 1912. Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Flights of Plane, 1912. Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Flights of Plane, 1912. Creator: Harris & Ewing
 
Anthony Jannus, Flights And Tests of Rex Smith Plane Flown By Jannus - Flights of Plane, 1912. Creator: Harris & Ewing
 
Atwood, Harry. Aviator. Rising From White House Lawn In Wright Type B Plane, July, 1911. Creator: Harris & Ewing
 
Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing
 
Aviator Harry Atwood, in Plane with Leo Stevens, 1911. Creator: Harris & Ewing
 
Wright Brothers Airplane, Etc - Harry Atwood, 1911. Creator: Harris & Ewing
 
Paul Peck, Commercial Aviator - In Curtiss Type Plane; College Park, 1911. Creator: Harris & Ewing
 
U.S. Army - Motorized Anti-Aircraft Battery, 1910. Creator: Harris & Ewing
 
Army Aviation, College Park Aviation Field - Wright Brothers Plane, Wrecked, 1911. Creator: Harris & Ewing
 
Boy Scouts - Visit of Sir Robert Baden-Powell To D.C. Making Fire; Mrs. Taft Watching, 1911. Creator: Harris & Ewing
 
Boy Scouts - Visit of Sir Robert Baden-Powell To D.C. Making Fire, 1911. Creator: Harris & Ewing
 
Boy Scouts - Visit of Sir Robert Baden-Powell To D.C. Making Fire; Mrs. Taft Watching, 1911. Creator: Harris & Ewing
 
Boy Scouts - Visit of Sir Robert Baden-Powell To D.C. Making Fire; Mrs. Taft Watching, 1911. Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909 - First Army Flights; View of Wright Plane, 1909 July. Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909 - Hangar, Wilbur Wright, Right, Showing His Objection To... Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909. Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909 - First Army Flights; Wilbur And Orville Wright... Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909 - First Army Flights, 1909 July. Creator: Harris & Ewing
 
Wright Flights, Fort Myer, Va, July 1909 - First Army Flights; Lt. Frank Lahm And Lt. Fonlois. Creator: Harris & Ewing
 
Grahame-White Flights, 1910. Creator: Harris & Ewing
 
Claude Grahame-White - Fixing Wing of His Forman Plane, 1910. Creator: Harris & Ewing
 
Post office Department, Hupp Auto Railway Service, 1912. Creator: Harris & Ewing
 
Post office Department, Hupp Auto Railway Service, 1912. Creator: Harris & Ewing
 
Post office Department, Hupp Auto Railway Service, 1912. Creator: Harris & Ewing
 
Post office Department, Hupp Auto Railway Service, 1912. Creator: Harris & Ewing
 
Democratic National Convention - Robert Crain of Baltimore, 1912. Creator: Harris & Ewing
 
Paul Peck, Commercial Aviator - In Gyro Type Plane Sponsored By Berliner At Mineola, N.Y., 1911. Creator: Harris & Ewing
 
Admiral John Adolphus Bernard Dahlgren, US Navy, between 1855 and 1865. Creator: Unknown
 
Richard March Hoe, between 1855 and 1865. Creator: Unknown
 
Admiral John Adolphus Bernard Dahlgren, between 1855 and 1865. Creator: Unknown
 
Richard March Hoe, between 1855 and 1865. Creator: Unknown
 
Alexander Gardner's Photographic Gallery, 7th & D Street, NW, Washington, D.C., ca. 1863. Creator: Unknown