A portrait of John Leslie from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Justus Liebig from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Carl von Linne from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Guglielmo Marconi from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Nevil Maskelyne from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of James Clerk Maxwell from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Pierre-Louis Moreau de Maupertuis from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Eilhard Mitscherlich from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Gaspard Monge from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Samuel Finley Breese Morse from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Roderick Impey Murchison from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Walther Nernst from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Isaac Newton from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Hans Christian Orsted from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Mathieu Joseph Bonaventure Orfila from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Richard Owen from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Paracelsus from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Lyon Playfair, Baron Playfair from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Prince, Count Palatine Rupert from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Joseph Saxton from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

A portrait of Herbert Spencer from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

An portrait of Alexander T. Brown the inventor of the Smith Premier typewriter.

A black-and-white portrait of Roger Bacon, English scientist and philospher of the thirteenth century.

Rubens's group portrail of the family of Jan Brueghel the Elder.