Spemann, German embryologist, recipient of the Nobel Prize in Physiology or Medicine (b. 1869) September 11 Alipio Ponce, Peruvian police officer, Civil Guard hero (b. 1906) Christian Rakovsky, Bulgarian revolutionary, Russian Bolshevik and Soviet diplomat, journalist, physician and essayist (executed) (b. 1873) Maria Spiridonova, Russian revolutionary, former leader of the Party of Left Socialist Revolutionaries (executed) (b. 1884) September 18 – Fred Karno, English music hall impresario (b. 1866) September 20 – Mikhail Kirponos, Soviet general (b. 1892) October October 5 – Louis Brandeis, U.S. Supreme Court Justice (b. 1856) October 8 Gus Kahn, German songwriter (b. 1886) Valentine O'Hara, Irish author (b. 1875) October 9 – Helen Morgan, American singer and actress (b. 1900) October 16 – Sergei Efron, Russian poet and secret police operative (executed) (b. 1893) October 18 – Manuel Teixeira Gomes, 7th President of Portugal (b. 1860) October 22 – Ioan Glogojeanu, Romanian general (assassinated) (b. 1888) October 25 – Robert Delaunay, French painter (b. 1885) October 26 Arkady Gaidar, Russian soldier and children's story writer (killed in action) (b. 1904) Victor Schertzinger, American composer, director (b. 1888) October 28 20 Soviet military officers and politicians executed in Kuybyshev: Pavel Rychagov (b. 1911) Grigori Shtern (b. 1900) Yakov Smushkevich (b. 1902) Filipp Goloshchekin (b. 1876) Mikhail Kedrov (b. 1878) Aleksandr Loktionov (b. 1893) October 29 Harvey Hendrick, American baseball player (b. 1897) Károly Huszár, 25th Prime Minister of Hungary (b. 1882) November November 7 – Frank Pick, British transport administrator and patron of industrial design (b. 1878) November 10 – Carrie Derick, Canadian botanist and geneticist (b. 1862) November 16 Miina Härma, Estonian composer (b. 1864) Sir Henry Wilson, British general (b. 1859) November 17 – Ernst Udet, German World War I fighter ace, Nazi Luftwaffe official (suicide) (b. 1896) November 18 Émile Nelligan, Canadian poet (b. 1879) Walther Nernst, German chemist, Nobel Prize laureate (b. 1864) Chris Watson, 3rd Prime Minister of Australia (b. 1867) November 22 Kurt Koffka, German psychologist (b. 1886) Werner Mölders, German fighter pilot (b. 1913) November 23 – Henrietta Vinton Davis, American elocutionist, dramatist, impersonator and public speaker (b. 1860) November 25 – Pedro Aguirre Cerda, President of Chile (b. 1879) November 26 – Niels Hansen Jacobsen, Danish sculptor, ceramist (b. 1861) November 27 – Sir Charles Briggs, British general (b. 1865) December December 2 – Edward Rydz-Śmigły, Polish marshal (b. 1886) December 3 – Christian Sinding, Norwegian composer (b.