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19th century illustration of a scientist with microscopes, books, vials and bottles delving into the mysteries of the natural world.   From a 1876 copy of Harper's New Monthly Magazine.
Arturo Prat Chacon portrait from Chilean money
Jose Felix Ribas (1775 - 1815). Portrait from Venezuela Banknotes
Simon Rodriguez Portrait Pattern Design on Venezuelan Bolivar Currency
Genoa, Italy - 3 May,2019: Statue of Dono Di Luigi Roggero in Palazzo Rosso in the courtyard of Palazzo Rosso situated in the street of Via Giuseppe Grimaldi in historic center of Genoa, Liguria.
Portrait of Commandant General Petrus Jacobus Joubert (1831 - 1900). Vintage photo etching circa late 19th century.
Dublin, Ireland. The statue of George Salmon (1819 - 1904) distinguished and influential Irish mathematician and Anglican theologian in Trinity College
Vintage Photo of a Man - Scanned 1890 photo
Russia 2009 stamp printed in Russia shows Dmitri Mendeleev (1834-1907), celebrate the 175th anniversary of Mendeleev's birth, circa 2009
Antique portrait of famous men: Mark Twain
Takahashi Korekiyo a closeup portrait from old Japanese money - Yen
Simon Rodriguez Portrait Pattern Design on Venezuelan Bolivar Currency
Simon Rodriguez (1769 - 1854). Venezuelan philosopher and educator, Simón Bolívar's tutor and mentor. Portrait from Venezuelan 20 Bolivares 2018 Banknotes
Richard Cobden (1804 - 1865), British manufacturer and leading figure of Manchester liberalism and the free trade movement. Wood engraving, published in 1865.
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
Portrait of Reverend William George Lane of the Royal Canadian Regiment of Infantry. Vintage photo etching circa late 19th century.
Antique photograph of people from the World: Mark Twain
Michael Faraday a portrait from English  money
Antique photograph of Jules François Camille Ferry was a French statesman and republican. He was one of the leaders of the Moderate Republicans and served as Prime Minister of France from 1880 to 1881 and 1883 to 1885.
James A. Garfield Memorial
Illustration from 19th century.
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
Portrait of Stephanus Johannes Paulus Kruger (Paul Kruger), 3rd State President of the South African Republic (1825 - 1904). Vintage photo etching circa late 19th century.
Ninomiya Sontoku (1787-1856) on 1 Yen 1946 banknote from Japan. 19th century Japanese agricultural leader, philosopher, moralist and economist. Less than 30% of the banknote is visible.
Portrait of handsome man 1892
Alfredo Vasquez Acevedo a closeup portrait from Uruguayan money - Peso
Viintage photo of a old man
Plaque in the main street of Dahme in the Mark Brandenburg with a portrait of Otto Unverdorben, who invented aniline there in 1826 - Germany.
Image from 19th century.
Free Images: "bestof:Robert Kane (chemist).jpg Robert Kane 1809 1890 Irish chemist PD-Art From http //www sil si edu/digitalcollections/hst/scientific-identity/fullsize/..."
The_Anti-Slavery_Society_Convention,_1840_by_Benjamin_Robert_Haydon.jpg
Georg_Freiherr_von_Vega_1802.jpg
Joseph-Nicolas_Robert-Fleury_Dagron_1880_BNF_Gallica.jpg
Forensic DNA Analysis (5881109656).jpg
Giovanni_Paolo_Panini_–_Ancient_Rome.jpg
Peary.jpg
Benjamin_Franklin_1767.jpg
Edward_Savage_-_The_Washington_Family_-_Google_Art_Project.jpg
Robert_Fludd.jpg
Adolph_Frank.jpg
Portrait_of_Alfred_Bernhard_Nobel_(1833-1896),_Chemist.jpg
Walter Hastings.jpg
Robert C. Schenck - Brady-Handy.jpg
Agostino_Brunias_-_Button_-_Google_Art_Project.jpg
Alfred_Sisley_027.jpg
Agostino_Brunias_-_West_Indian_Scene_-_Google_Art_Project.jpg
Vincent_van_Gogh_-_Portret_van_de_postbode_Joseph_Roulin.jpg
Viscount Sydney by Gilbert Stuart.jpg
Robert_Henri_-_Irish_lad.jpg
The_Irish_Girl_-_Robert_Henri.jpg
Manzanar_Relocation_Center,_Manzanar,_California._Doctor_Robert_Emerson,_bio-chemist_and_botanist_f_._._._-_NARA_-_538036.jpg
Portrait_of_Charles_Robert_Darwin_(1809-1882),_Biologist.jpg
Portrait_of_Robert_William_Holley_(1922-1993),_Biochemist.jpg
Napoleon_Lefevre_1809.jpg
RobertRamspeck.jpg
Manzanar_Relocation_Center,_Manzanar,_California._Guayule_plantings_are_being_inspected_by_Doctor_R_._._._-_NARA_-_538018.jpg
Cockings_parachute.gif
David_Octavius_Hill_and_Robert_Adamson_-_Patrick_Byrne,_about_1794_-_1863._Irish_Harpist_-_Google_Art_Project.jpg
Ludwig_Mond_by_Solomon_Joseph_Solomon.jpg
Robert_van_Eijsden_002.jpg
Robert C. DeLarge - Brady-Handy.jpg
Robert_Edge_Pine-David_Garrick.jpg
Robert_van_Eijsden_001.jpg
Robert_H._Milroy_-_Brady-Handy.jpg
Signature_Moritz_Hermann_von_Jacobi.svg
Robert_Vonnoh_-_Moist_Weather_(France).jpg
Robert_Vonnoh_-_Peasant's_Garden.jpg
Robert_Jobling,_by_Robert_Jobling.jpg
Aurèle_Robert_-_Cathédrale_de_Lugano.jpg
Aurèle_Robert_-_Portrait_de_vieillard.jpg
Robert_Charles_Winthrop_-_Brady-Handy.jpg
Manzanar_Relocation_Center,_Manzanar,_California._Doctor_Robert_Emerson,_on_the_extreme_right,_visi_._._._-_NARA_-_538020.jpg
Robert_Alott_Süditalienische_Szene.jpg
Robert_Salmon_-_British_Merchantman_in_the_River_Mersey_off_Liverpool.jpg
Robert_Seppings_(1767-1840),_by_William_Bradley.jpg
Robert_Walker_Macbeth,_by_Robert_Walker_Macbeth.jpg
The_Shannon_Portrait_of_the_Hon_Robert_Boyle.jpg
Robert_Noir_Mutter_und_Kind.jpg
Metsu,_Gabriël_-_L'Apothicaire_-_c._1651-1667.jpg
Robert_Thegerstrom_Abendliche_Ansicht_von_Kairo_1888.jpg
Robert_Alott_Orientalische_Straßenszene.jpg
Hercules_Rowley,_2nd_Viscount_Langford_by_Robert_Hunter.jpg
Luggars_Landing_New_Basin_Street_1917.jpg
John_Robert_Dicksee_The_waitress.jpg
John_Robert_Dicksee_A_Man_with_Spectacles.jpg
John_Robert_Dicksee_General_John_Nicholson.jpg
John_Robert_Dicksee_Lady_with_a_Glove.jpg
John_Robert_Dicksee_My_Lady's_Page.jpg
John_Robert_Dicksee_Richard_Lambert_Jones.jpg
Hubert_Robert_A_Grand_Staircase_In_a_Park_Setting.jpg
Aurèle_Robert_-_Die_Stadtbibliothek_in_der_Wasserkirche.jpg
Aurèle Robert - Cäsar Adolf Bloesch.jpg
Robert_Alexander_Hillingford-_The_Fairy_Dance.jpg
Robert_Fulton_-_Circle_of_Thomas_Sully.jpg
Robert_Russ_Gartenpartie_aus_dem_Etschtal.jpg
Ghazi-ud-Din_Haider_Robert_Home_1820.jpg
Laundry_Day_in_the_Courtyard,_French_Quarter,_by_Robert_Wadsworth_Grafton.jpg
Ruth_(Lummus)_Buffum_(1813-1891).jpg
John_Robert_Dicksee_For_You,_Miss.jpg
Samuel_Rutherford_St._Andrews.jpg
A_Conventicle_Preacher_before_the_Justices.jpg
RHamilton.jpg
Hubert_Robert_005.jpg
Robert_Lorimer,_at_work.jpg
Claire Clairmont, by Amelia Curran.jpg
Saint_Roch_Cemetery_New_Orleans_1917_Grafton.jpg
Delaunay_ChampDeMars.jpg
Girl_in_a-Red_chair.jpg
John_Robert_Mowbray_(1815–1899),_by_Walter_William_Ouless.jpg
Robert_Gavin_(1827-1883),_by_Robert_Gavin_(1827-1883).jpg
John_Robert_Dicksee_Brigadier_General_John_Nicholson.jpg
John_Robert_Dicksee_Henry_Edmund_Knight.jpg
John_Robert_Dicksee_The_Special_Correspondent.jpg
Royal_Charlotte_-_Indiaman.jpg
Hubert_Robert_006.jpg
Robert_Walker_Mac_Beth_-_Mother_and_Daughter_on_a_Swing_(Happy_Times),_1895.jpg
Robert_Woodcock_-_A_Battle_Between_English_and_Dutch_Ships.jpg
Robert_Dundas,_1st_Bt_of_Beechwood_(1761-1825),_Studio_of_Thomas_Lawrence.jpg
The_Garrison_of_the_Village_had_at_Last_Surrendered.png
John_Robert_Dicksee_John_Laird_Mair.jpg
John_Robert_Dicksee_Reverend_Joseph_Harris.jpg
John_Robert_Dicksee_Warren_Stormes_Hale.jpg
Dr_Robert_Levett_of_Lichfield_(d.1782).jpeg
Robert_Burrows_-_The_barque_‚Florida‘.jpg
Robert_Nicholas_Fowler,_1st_Bt,_by_Frank_Holl.jpg
Dublin_Bread_Company_revisited.jpg
Paul_Cézanne_-_Baigneuses_(Detroit).jpg
Englischer_Meister_um_1570_001.jpg
Robert_Feke_001.jpg
Léopold_Robert_001.jpg
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