THOMAS EDISON (1847-1931).
THOMAS ALVA EDISON (1847-1931).
THOMAS EDISON (1847-1931)
THOMAS A. EDISON (1847-1931).
Thomas A. Edison with Phonograph, Engraving, circa 1888
Thomas Alva Edison (1847-1931), American Inventor, half-length seated Portrait, Louis Bachrach, Bachrach Studios, 1922
Thomas Alva Edison (1847-1931), American Inventor, half-length Portrait, Louis Bachrach, Bachrach Studios, 1922
EDISON & STEINMETZ, 1922.
CARL SAGAN (1934-1996).
NEWTON D. BAKER (1871-1937).
BENJAMIN FRANKLIN (1706-1790).
CHARLES ROBERT DARWIN
ALBERT ABRAHAM MICHELSON
LIN YU-T'ANG (1895-1976).
SELMAN WAKSMAN (1888-1973).
FLORENCE SABIN (1871-1953).
LEE DE FOREST (1873-1961).
FRANK HARRIS (1854-1931).
JOHN WORRALL KEELY, c1895.
JOHN HUNTER (1728-1793).
THEODORE ROOSEVELT
CHARLES DARWIN (1809-1882).
SAMUEL LANGHORNE CLEMENS
JOEL CHANDLER HARRIS
SAMUEL PIERPONT LANGLE
SAMUEL PIERPONT LANGLEY
RUPERT BLUE (1868-1948).
WILLIAM JENNINGS BRYAN
JOSEPHUS DANIELS (1862-1948).
BENJAMIN FRANKLIN
ALEXANDER GRAHAM BELL/n(1847-1922).
EDISON WITH HIS FAMILY.
WILLIAM HICKLING PRESCOTT
THOMAS BABINGTON MACAULAY
BOOKER T. WASHINGTON
LEON TROTSKY (1879-1940).
WILLIAM HOWARD TAFT
WOODROW WILSON (1856-1924).
JOHN F. KENNEDY
ROBERT FULTON (1765-1815).
THOMAS KUCHEL (1910-1994).
HENRIETTA SWAN LEAVITT
SCHOLAR, 17th CENTURY.
CHRISTOPHER COLUMBUS
ALBERT SCHWEITZER
CARL GUSTAV JUNG (1875-1961).
SIR CHARLES LYELL
ALEXANDER BERKMAN
DAVID WECHSLER (1896-1981).
SIR FRANCIS GALTON
MARGARET MEAD (1901-1978).
KENNETH ROBERTS (1885-1957).
ELIHU ROOT (1845-1937).
GEORGE SUTHERLAND
BEN AMES WILLIAMS
JOSEPH CONRAD (1857-1924).
SELMA LAGERL F (1858-1940).
NIKOLA TESLA (1856-1943).
CHARLES DURYEA (1862-1938).
JOHN BURROUGHS (1837-1921).
NACA, 1938
Leo Esaki, Japanese physicist
HENRI DE BLOWITZ
WILLIAM McKINLEY (1843-1901).
GEORGE NELSON PEEK
MICHAEL IDVORSKY PUPIN
THOMAS H. HUXLEY
MABEL HUBBARD BELL (1857-1923).
SAMUEL GOMPERS (1850-1924).
Portrait of Thomas A Edison sitting at his desk
SIR CHARLES WHEATSTONE
MACK SENNETT (1884-1960).
ANNA HOWARD SHAW
SILENT FILM STILL: OFFICES.
DWIGHT D. EISENHOWER
HARRY S. TRUMAN
GALILEO GALILEI
Walter Rittman, US chemical engineer
LUTHER BURBANK (1849-1926).
BRAILLE TYPEWRITER, 1974.
ELI WHITNEY (1765-1825).
VERNON L. KELLOGG (1867-1937).
AMERICAN SCIENTISTS.
ALBERT EINSTEIN (1879-1955).
HENRIETTA S. LEAVITT
THEODOSIUS DOBZHANSKY
Thomas Alva Edison (1847-1931)
THOMAS ALVA EDISON
PHILANDER CHASE KNOX
JOHN WYCLIFFE (1320?-1384).
SAINT ROBERT BELLARMINE
COUNT KEYSERLING (1880-1946).
GEORGE WASHINGTON GOETHALS
SIR ARTHUR CONAN DOYLE (1859-1930).
ELMER AMBROSE SPERRY
WRIGHT BROTHERS
MARIE CURIE (1867-1934).
WILL H. HAYS (1879-1954).
Herbert Gasser, American physiologist
Barbara McClintock, US cell geneticist
PIERRE E.M. BERTHELOT
ALEXANDER von HUMBOLDT
CAROLUS LINNAEUS (1707-1778).