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Hugo Schweitzer, German-US chemist

Walter Rittman, US chemical engineer

Samuel Lind, US chemist

William Thayer, US physician

Benjamin Silliman, US chemist

Thomas Simonton, US astronomer

Seth Chandler, US astronomer

Lewis Boss, US astronomer

Alchemist at work, 19th century

Anna Julia Cooper, US scholar and civil rights activist

Scientists receiving honorary degrees at Delhi University

Maria Telkes, solar energy pioneer

Robert Bunsen, Gustav Kirchoff and Henry Roscoe

Peter Debye, Dutch chemical physicist

Wolfgang Kohler, German psychologist

William Coblentz, US physicist

Maria Mitchell, US astronomer

History of Medicine conference, 1967

Barbara McClintock, US cell geneticist

Paul Ehrlich, German immunologist

Niels Finsen, Danish physician

Stanislaw Ulam, US mathematician

German and US psychiatrists, circa 1904

Hilda Hempl Heller, US bacteriologist

Leo Wallerstein, German-US chemist

Jacob Hasslacher, German-US industrialist

Charles Martin Hall, US chemist

Grove Gilbert, US geologist

Lise Meitner and Glenn Seaborg

Joyce Jacobson Kaufman, American chemist

Simon Flexner, US pathologist

Geoffrey Keynes, British doctor

Edward S. Ayensu, Ghanian scientist and economist

Alchemist, historical artwork

18th Century chemist, historical artwork

Charles Darwin, British naturalist

Homer Smith, US physiologist

Richard Feynman, US physicist

Samuel Milner, British physicist

University of Chicago physicists, 1908

Helen Lois Koch, American psychologist

Kathleen Mary Drew-Baker, British phycologist

Victor Heiser, American physician

Frederick Allen, US doctor

John Van Nostrand Dorr, US chemist

Linn Bradley, US chemical engineer

Ethel Stiffler, US botanist

Grace Peterson, US mycologist

Nikola Tesla, Serb-US physicist

Sigard Knopf, German-US physician

William Cogswell, US industrialist

Alexander von Humboldt

Dorothea Lange, US photographer

Grace Hopper, US computer scientist

Albany, New York: c. 1835 An engraving by E. Prudhomme of American physician Theodric Romeyn Beck who specialized in medical jurisprudence and wrote the first significant book on forensic medicine.

Leslie Jenness, US chemical engineer

Louis Dohme, German-US pharmacist

William Henry Perkin, British chemist

Thomas Hunt Morgan, US geneticist

Helen Redfield, US geneticist

Holmes, Walcott and Gannett, US geologists, 1897

Isabella Gordon, Scottish marine biologist

Fritz Haber, German chemist

Fritz Haber, German chemist

Fritz Schaudinn, German microbiologist

Simon Flexner, US pathologist

Bennett Epstein, US chemical engineer

Irving Hochstadter, US chemical engineer

Harold Levey, US chemical engineer

Florence Lowther, US zoologist

Florence Peebles, US biologist

Madam Marie Curie in lab

Rudolf II with his alchemist, artwork

Russell Hulse, US astrophysicist

Davisson and Germer, US physicists

Ehrenfest and Burgers, physicists

Fermi, Heisenberg and Pauli

Zhores Medvedev and Vladimir Efroimson

Benjamin Rush, US physician and politician

Herbert Gasser, American physiologist

Joseph Erlanger, American physiologist

Geneticists Bodmer and Lewontin

Franz Schrader and Sally Hughes-Schrader

Gerald Edelman, American immunologist

Chemical industry control room

Florence Sabin, US medical researcher

James Joule, British physicist

Jules Bordet, Belgian immunologist

Harlow Shapley, American astronomer

Moritz Schroter, German engineer and professor

Heiser and Gorgas, American physicians

Lewis Terman, US psychologist

Albert Gunther, German-British zoologist

Charles Wilkes, US naval officer and explorer

George Thane, British anatomist

Renato Dulbecco, Italian virologist

Helen Redfield, American geneticist

David Livingstone (1813-73), Scottish Missionary and Explorer, Portrait

Mark Twain, US author

Mark Twain, US author

Henry Hurd, US psychiatrist

Sigard Knopf, German-US physician

Ernst Amberg, Swiss mathematician

John Snow, British physician

Helen M. Wallace, American paediatrician

Ivan Pavlov, Russian physiologist

Amelia Earhart, US aviation pioneer

Louis Ombredanne, French physician

Queen Victoria of the United Kingdom, 1860s

Portrait Of John Dollond

Benet Wins Pulitzer For Poetry

Robert Yerkes, US psychologist

Titian Peale, US naturalist

Herman Frasch, German chemical engineer

Medical Occupation

Medical Occupation

Medical Occupation

Robert Yerkes, US psychologist

Charles Darwin in his evolutionary tree

Scientist in laboratory doing experiment

Portrait of scientist in laboratory looking at camera

Portrait of scientist in laboratory looking at camera

Scientists in laboratory writing in notebook

Portrait of scientist in laboratory looking at camera smiling

Tom Blundell, British biochemist

US rural settlement, early 20th century

Mrs. Louise J. Ross, chairman of Branch no. 6, New Orleans Chapter of American Red Cross, successful in her work and recognized as the leader of her race in the South, New Orleans, Louisiana, USA, American National Red Cross Photograph Collection, Septemb

David Lloyd George (1863-1945), British Statesman and Prime Minister, Seated Portrait, Stereo Card, Underwood & Underwood, 1918

NACA, 1938

Edward S. Ayensu, Ghanian scientist and economist

Martin Harwit, Czech-American astronomer

Scientist wearing lab coat working on computer

Scientist wearing lab coat working on computer

Scientist wearing lab coat working on computer

Leo Esaki, Japanese physicist

Blood tube sitting on blood results with technician at microscope in lab

Ben Franklin, University of Pennsylvania

Joseph Davidson, US industrial chemist

Louis Agassiz and Benjamin Peirce

Charles Darwin, British naturalist

Henry Herbert Donaldson, neuroscientist

Scotland: c. 1800 An engraving of noted pioneering Scottish surgeon John Hunter.

Alexander Graham Bell

Alexander Graham Bell

Jeanette Scissum-Mickens, American scientist

Benjamin Franklin, born in Boston, Jan 17th 1706, -- died in Philadelphia, April 17th 1790, Painted by T.H. Matteson, Esqr., Engraved by Henry S. Sadd, Printed by J. Neale, 1846

Female scientist working with samples

Cressy Morrison, US chemist

McKibbin, Oppenheimer and Weissman

John Newport Langley British physiologist

Victor Bloede, German-US chemist

A. Carr-Saunders, British sociologist

A. Carr-Saunders, British sociologist

Susan B. Anthony, American women's rights activist

Walter Rittman, US chemical engineer

Malcolm Hayden Hebb and George Eugene Uhlenbeck

NHM Geology Department staff, 1881

NHM Zoology Department staff, 1895

Charles Gnadinger, US chemist

Two Students studying in Library, Trinity College (Trinity Washington University), Washington, D.C., USA, Theodor Horydczak Collection, 1952

Franzo Crawford, US physicist

A man sleeping behind a book

Chemistry class banner with teacher, students sitting at desks with flask and microscope, vector illustration of learning process with place for text. Chemistry Class Banner with Teacher, Students Sitting

Frederic Bartholdi, French sculptor

Hugo Grotius (1583-1645), Dutch Jurist and Scholar, Engraving from an Original Painting by Michiel Janszoon van Mierevelt

The Quartier Latin.

Vannevar Bush, US electrical engineer

Cartoonist Jules Feiffer

Judge Monaghan At Thaw Trial

Young British Woman Judge

Industrialist Andrew Carnegie

Katharine J. Scott Bishop, American physician

Grand Duchess Anastasia of Russia

Harvard Mark 1 computer team, 1944

Allied leaders at the Tehran Conference, 1943

Allied leaders at the Tehran Conference, 1943

Thomas Masaryk, Czech politician and philosopher

Two Young Victorian Women

Persian Dolls On Display

Portrait Of Mother Jones

Male Workers, Assembling Department, National Cash Register, Dayton, Ohio, USA, William Henry Jackson for Detroit Publishing Company, 1902

Female Workers, Lock and Drill Department, National Cash Register, Dayton, Ohio, USA, William Henry Jackson for Detroit Publishing Company, 1902

Male Workers, Printing Department, National Cash Register, Dayton, Ohio, USA, William Henry Jackson for Detroit Publishing Company, 1902

Two Female Factory Workers Operating Machinery, which was Formerly done by Men, at Drill and Tool Plant that Manufactures Drills for use in all War Production Industries, Republic Drill and Tool Company, Chicago, Illinois, USA, Ann Rosener, Office of War

Group of Female Factory Workers Testing Twist Drills at Drill and Tool Plant that Manufactures Drills for use in all War Production Industries, Republic Drill and Tool Company, Chicago, Illinois, USA, Ann Rosener, Office of War Information, August 1942

Eunice Hancock, 21 years old, Operates Compressed Air Grinder at Midwest Aircraft Motor Plant, Ann Rosener, Office of War Information, August 1942

Female Worker Operating Compressed Air Machine at Midwest Aircraft Motor Plant, Ann Rosener, Office of War Information, August 1942

Michel Chevreul, French chemist

The Milkwoman

Lina Cavalieri, Italian opera singer

John Jacob Astor

Gabriel Tarde, French sociologist

John Bright (1811-89), British Politician and Orator, Engraving from an Original Painting by Alonzo Chappel, 1870

John Philpot Curran (1750-1817), Irish Statesman and Orator, Engraving from an Original Painting

Denis Davydov (1784-1839), Russian Soldier and Poet, Famed Guerilla Leader against Napoleon's Forces during 1812 Invasion of Russia, Lithograph

Nikolay Dobrolyubov (1836-61), Russian Literary Critic, Journalist and Poet, Seated Portrait, Steel Engraving

James Lawrence (1781-1813), American Naval Officer, Engraving from an Original Painting by Alonzo Chappel, 1862

Aneurin Bevan, Welsh politician

Living Quarters for Florida Migrant Workers, Bellcross, North Carolina, USA, Jack Delano, U.S. Farm Security Administration, July 1940

Mr. Joseph Soltisek, Polish Farmer, reading Newspaper, near Townsend, New York, USA, Jack Delano, U.S. Farm Security Administration, September 1940