DELAMBRE JEAN-BAPTISTE: (1749-1822) French Mathematician and Astronomer. Director of the Paris Observatory. An excellent A.L.S., `Delambre´, one p...

MAUVAIS VICTOR : (1809-1854) French Astronomer and Politician. Mauvais won the Lalande Prize in 1843 for the discovery of comet C/1843. He is cred...

SECCHI ANGELO: (1818-1878) Italian astronomer and Catholic priest, a pioneer in astronomical spectroscopy and one of the first scientists to state...

LINNAEUS CARL: (1707-1778) Swedish botanist, zoologist and physician who formalised binomial nomenclature, the modern system of naming organisms. ...

‘I am only sorry not to have deviated sooner, that an occupation where the aid of the eyes was not absolutely necessary was precisely that which...

Dolomieu’s manuscript notes on the essence of geological research –‘Errors experienced prevent the mind from dealing with new research: we think ...

CAPELLINI GIOVANNI: (1833-1922) Italian geologist and palaeontologist. Vintage signed and inscribed sepia carte-de-visite photograph, the oval alb...

BUFFON COMTE DE: (1707-1788) Georges-Louis Leclerc, Comte de Buffon. French Naturalist and Mathematician. Widely regarded as the father of natural...

DARWIN CHARLES: (1809-1882) English naturalist, famous for his theory of evolution published in On the Origin of Species (1859). A.L.S., Ch. Darwi...

TYLOR EDWARD BURNETT: (1832-1917) English anthropologist. A.L.S., Edward B. Tylor, four pages, 8vo, Wellington, Somerset, 2nd October 1876, to [Lo...

FLOURENS JEAN PIERRE: (1794-1867) French Physiologist. Founder of experimental brain science, and a pioneer in anesthesia. A.L.S., `Flourens´, one...

MAREY ETIENNE-JULES: (1830-1904) French scientist whose work was significant in the development of cardiology, aviation, cinematography and the sc...

MOSSO ANGELO: (1846-1910) Italian physiologist who invented the first ever neuroimaging technique, known as 'human circulation balance'. D.S., Ang...

TIMOFEEV-RESSOVSKY NIKOLAY: (1900-1981) Soviet Biologist. An influential personality who conducted research in radiation and population genetics, ...

MAUPERTUIS PIERRE LOUIS: (1698-1759) French Mathematician and Philosopher. Maupertuis was the first President of the Prussian Academy of Sciences ...

LEGENDRE ADRIEN-MARIE: (1752-1833) French mathematician who made numerous contributions to mathematics. A fine, rare A.L.S., Legendre, two pages, ...

GAUSS CARL FRIEDRICH: (1777-1855) German mathematician and physicist who made significant contributions to many fields in mathematics and science....

FEKETE MICHAEL: (1886-1957) Hungarian-Israeli mathematician. Manuscript D.S., M. Fekete, one page, 4to, n.p. (Jerusalem, Israel), 19th November 19...

FREUDENTHAL HANS: (1905-1990) Jewish-German-born Dutch mathematician who made substantial contributions to algebraic topology. Concluding third (a...

VICQ-D'AZYR FELIX: (1748-1794) French physician and anatomist, the originator of comparative anatomy and discoverer of the theory of homology in b...

FOURIER JOSEPH: (1768-1830) French Mathematician and Physicist. Best known for initiating the investigation of the Fourier series and their applic...

LAENNEC RENE: (1781-1826) French physician who invented the stethoscope in 1816 and pioneered its use in diagnosing various chest conditions. A ra...

BABINET JACQUES: (1794-1872) French physicist, mathematician and astronomer, known for his contributions to optics. A.L.S., Babinet, one page, 4to...

EINSTEIN ELSA: (1876-1936) Cousin and the second wife of Albert Einstein, married from 1919-36. A brief A.L.S., Elsa Einstein, one page, 8vo, n.p....

[EINSTEIN ALBERT]: (1879-1955) German-born theoretical physicist, Nobel Prize winner for Physics, 1921. A small group of three vintage 4 x 5 photo...

EINSTEIN ALBERT: (1879-1955) German-born theoretical physicist, Nobel Prize winner for Physics, 1921. An excellent scientific A.L.S., with his ini...

LADENBURG RUDOLF: (1882-1952) German atomic physicist. Manuscript D.S., R. Ladenburg, one page, 4to, Palmer Physical Laboratory, Princeton, New Je...

OSORIO DE ALMEIDA MIGUEL: (1890-1952) Brazilian physician and scientist who, alongside his brother Alvaro, is considered a 'father of modern physi...

PICCARD JACQUES: (1922-2008) Swiss Oceanographer and Engineer. Known for developing underwater submarines for studying ocean currents. Piccard and...

SCIENTISTS: An unusual 4to sheet of paper featuring the manuscript title Maxims of Life of the great scientists of the whole world in the hand of ...

PLAYFAIR WILLIAM: (1759-1823) Scottish engineer and political economist, the founder of graphical methods of statistics who invented several types...

TALBOT HENRY FOX: (1800-1877) English scientist, inventor and photography pioneer. A rare A.L.S., H. F. Talbot, two pages, 8vo, Harley Street (Lon...

‘….our wizard friend Tesla….’  [TESLA NIKOLA]: (1856-1943) Serbian-American inventor, electrical engineer and futurist, best known for his contrib...

BAIRD JOHN LOGIE: (1888-1946) Scottish inventor & electrical engineer who demonstrated the world's first live working television system in January...

PASTEUR LOUIS: (1822-1895) French Chemist & Microbiologist. An excellent content A.L.S., `L. Pasteur´, one page, 8vo, Paris, 30th October 1885, in...

‘The first vaccine I will send you tomorrow is to be tested for its strengthrelative to the second you will receive’  PASTEUR LOUIS: (1822-1895) F...

PASTEUR LOUIS: (1822-1895) French chemist and microbiologist, renowned for his discoveries of the principles of vaccination and pasteurisation. A....

GALL FRANZ JOSEPH: (1758-1828) German Neuroanatomist & Physiologist, a pioneer in the study of the localisation of mental functions in the brain. ...

PÉAN JULES-EMILE: (1830-1898) French Surgeon, one of the most reputed surgeons of the 19th century. Péan was the first surgeon to make a successfu...

LISTER JOSEPH: (1827-1912) English Surgeon who promoted the idea of sterile surgery. A brief A.L.S., Lister, one page, 8vo, Park Crescent, Portlan...

LISTER JOSEPH: (1827-1912) British surgeon, a pioneer of antiseptic surgery. A fine A.L.S., Joseph Lister, four pages, 8vo, Park Crescent, Portlan...

SELYE HANS: (1907-1982) Hungarian-Canadian endocrinologist, considered the first to demonstrate the existence of biological stress. T.L.S., Hans S...

WUNDT WILHELM: (1832-1920) German physiologist and philosopher, known today as one of the fathers of modern psychology. Wundt distinguished psycho...

FOREL AUGUSTE: (1848-1931) Swiss myrmecologist, neuroanatomist, psychiatrist and eugenicist, noted for his investigations into the structure of th...

‘For more than a generation I have struggled with opposition to psychoanalysis’ FREUD SIGMUND: (1856-1939) Austrian neurologist, the founder of ps...

JUNG CARL: (1875-1961) Swiss psychiatrist and psychoanalyst who founded analytical psychology. T.L.S., C. G. Jung, one page, oblong 8vo, Kusnacht,...

LA CONDAMINE CHARLES MARIE DE: (1701-1774) French Explorer, Geographer and Mathematician. He measured the length of a degree latitude at the equat...

ROHLFS FRIEDRICH GERHARD: (1831-1896) German Explorer, Geographer and Author. A.L.S., `Gerhard Rohlfs´, one page, small 4to, Weimar, 15th January ...

PARRY WILLIAM EDWARD: (1790-1855) Anglo-Welsh explorer of the Arctic who attempted one of the earliest expeditions to the North Pole in 1827. Dark...

PEARY ROBERT: (1856-1920) American Rear Admiral and explorer who claimed to have been the first to reach the geographic North Pole with his expedi...

PEARY ROBERT: (1856-1920) American Rear Admiral and explorer who claimed to have been the first to reach the geographic North Pole with his expedi...

BYRD RICHARD E.: (1888-1957) American naval officer, polar explorer and pioneer aviator who claimed to have led the first expeditions to reach bot...