Catholic nun and venerable (b. 1908) September 14 Hugo Ball, German poet, founder of Dadaism (b. 1886) Isadora Duncan, British-born American dancer (b. 1877) Countess Sophie of Merenberg (b. 1868) September 17 – Eugene Lamb Richards, American football player (b. 1863) September 19 – Michael Ancher, Danish painter (b. 1849) September 22 – Édouard Kirmisson, French surgeon (b. 1848) September 23 – Iustin Frățiman, Romanian historian and activist (b. 1870) September 27 – Mary Canfield Ballard, American poet (b. 1852) September 29 Willem Einthoven, Dutch inventor, recipient of the Nobel Prize in Physiology or Medicine (b. 1860) August von Heeringen, Prussian admiral (b. 1855) September 30 – Samuel Garman, American naturalist and zoologist (b. 1843) October 2 Svante Arrhenius, Swedish chemist, Nobel Prize laureate (b. 1859) John Dalzell, U.S. Representative from Pennsylvania (b. 1845) Foqion Postoli, Albanian novelist and playwright (b. 1889) October 5 – Sam Warner, American Hollywood studio executive (b. 1887) October 7 – Edward Guinness, 1st Earl of Iveagh, Irish businessman and philanthropist (b. 1847) October 8 Ricardo Güiraldes, Argentine novelist and poet (b. 1886) Johann Sahulka, Austrian scientist (b. 1857) Mary Webb, English novelist (b. 1881) October 9 – João Marques de Oliveira, Portuguese painter (b. 1853) October 10 – Gustave Whitehead, German-born aviation pioneer (b. 1874) October 11 – Miguel R. Dávila, Honduranian general, 18th President of Honduras (b. 1856) October 13 Caroline Brown Buell, American activist (b. 1843) Heinrich XXIV, Prince Reuss of Greiz (b. 1878) October 17 Harry Jonathan Park, American politician (b. 1868) Thomas Hyland Smeaton, Australian politician and trade unionist (b. 1857) October 22 Borisav Stanković, Serbian realist writer (b. 1876) Ross Youngs, American baseball player (b. 1897) October 29 – Hermann Muthesius, German architect, author and diplomat (b. 1861) October 30 Maximilian Harden, German editor and journalist (b. 1861) Arthur Nash, American businessman (b. 1870) November–December November 1 – Florence Mills, American cabaret singer (b. 1896) November 4 Hawthorne C. Gray, record-setting American balloonist (b. 1889) Valli Valli, German-born British actress (b. 1882) November 5 – Augusta Déjerine-Klumpke, American-born French doctor (b. 1859) November 6 – Édouard Laguesse, French pathologist and histologist (b. 1861) November 7 Arvid Gerhard Damm, Swedish engineer and inventor (b. 1869) Augusto Novelli, Italian journalist and writer (b. 1867) November 11 Albèrt Arnavièlha, French journalist and poet (b. 1844) Wilhelm Johannsen, Danish botanist, physiologist and geneticist (b. 1857) November 12 – Feliciano Viera, 22nd President of