John Quincy Adams, 6th American #2
Photo Researchers
Smithsonian Institution Building
Rafael Macia
Freer Gallery Of Art
Rafael Macia
Dusk View Of The Lincoln Memorial #2
Rafael Macia
Washington Monument
Dale Boyer
World War II Memorial Plaza
Spencer Grant
Christmas Post Office Truck 1922
LOC Science Source
Fiorello La Guardia, American Politician #1
Science Source
Woolworths Christmas Shoppers, 1941
Science Source
Prohibition, 1922
Science Source
Daredevil Bicycle Rider, 1884
Science Source
Curtiss Jn-4, Airmail Service #2
Science Source
Washington, D. C
Rafael Macia
Ww II Memorial Plaza, Washington, D.c
Spencer Grant
White House, Washington, D.c., 1880
Wellcome Images
Capitol Building, Washington, D.c., 1880
Wellcome Images
Cherry Blossoms, Washington, D.c
Linda Bartlett
Thomas Jefferson Memorial
Mark Harmel
Senate Page Snowball Fight, C.1909-1932
Science Source
Polluted Potomac River
Roger A. Clark
The White House
Mark Newman
Dusk View Of The Lincoln Memorial
Rafael Macia
The Washington Memorial
Rafael Macia
Statue Of Abraham Lincoln
Rafael Macia
Washington National Cathedral
Rafael Macia
Dusk View Of The Lincoln Memorial #1
Rafael Macia
Lincoln And Washington Memorials
Rafael Macia
The Washington Memorial #1
Rafael Macia
United States Capitol Dome
Mark Harmel
United States Capitol Dome #1
Mark Harmel
Washington Dc
NASA / Goddard Space Flight Center
Washington Monument
Photo Researchers
Coolidge With Native Americans
Photo Researchers
Wwi Victory Parade
Photo Researchers
Knickerbocker Storm Damage, 1922
Science Source
Mary Loomis, Radio School Operator
Science Source
Knickerbocker Storm Damage, 1922 #1
Science Source
One Of The First Strip Malls In America
Photo Researchers
Hailstone, 1953
Science Source
Knickerbocker Storm Damage, 1922 #2
Science Source
Knickerbocker Storm Damage, 1922 #3
Science Source
Abolition Of Slavery
Photo Researchers
Girls On Climbing Apparatus, 1899
Photo Researchers
Washington Monument
Rafael Macia
East Front Of Us Capitol Building
Spencer Grant
East Front Of U.s. Capitol Building #1
Spencer Grant
Car Of History, U.s. Capitol Statuary
Spencer Grant
Batboys, 1924
Science Source
Children Brushing Teeth
Science Source
John Mather, American Astrophysicist
Science Source
John Mather, American Astrophysicist #1
Science Source
Fbis Identification Division, 1943
Science Source
Lincoln And American Indian Chiefs, 1863
British Library
Messenger Boy, Lewis Hine, 1912
Science Source
Marlon Brando
NARA Science Source
Lincoln Memorial
Walker Brothers
Curtiss Jn-4, Airmail Service #1
Science Source
Singer Midgets Visit White House, 1924
Science Source
Coolidge Midget Marching Club, 1924
Science Source
Singer Midgets Visit White House, 1924 #1
Science Source
Lincoln Memorial
Mark Harmel
U.s. Capitol Building
Ulrike Welsch
Washington Monument
Alison Wright
Suffragettes At The Capitol, 1913
Science Source
Dorsay Clock With Louvre
Holly C. Freeman
Boy Puts Letter Into Mailbox, C. 1880
Photo Researchers
Côte Dazur, France
Jean-Louis Klein & Marie-Luce Hubert
Côte Dazur, France #1
Jean-Louis Klein & Marie-Luce Hubert
Discovery Of The Positron, 1932 #2
Science Source