- Sep 7 Johnny Gruelle patents his Raggedy Ann doll (US Patent D47789)
- Sep 7 St Louis Terriers' Dave Davenport no-hits Chicago Whales (Federal League), 3-0
- Sep 8 Association of Negro Life & History founded
- Sep 8 US National Championship Men's Tennis, Forest Hills, NY: William Johnston beats Maurice McLoughlin 1-6, 6-0, 7-5, 10-8 in first US event held at West Side Tennis Club, Forest Hills, New York
- Sep 9 Association for the Study of Negro Life and History formed in Chicago by Carter G. Woodson and others. Now the Association for the Study of African American Life and History.
Event of Interest
Sep 16 Tsar Nicolas II adjourns 4th Duma

Nicholas II
- Sep 16 US takes control of customs & finances of Haiti for 10 years
- Sep 21 Emanuel Querido ("Kerido") begins publishing Querido
- Sep 22 Boston Red Sox ask Boston Braves for use of Braves Field (10,000+ capacity) for Baseball World Series against Philadelphia Phillies
- Sep 22 Southern Methodist University (Dallas, Texas) holds its 1st class
- Sep 22 Xavier University, 1st Black Catholic College in US, opens in NO LA
- Sep 25 Battle of Loos commenced, lasted until 14th October. Chlorine gas deployed by the British was blown back into their own trenches: 59,000 British & 26,000 German casualties
- Sep 25 The Second Battle of Champagne begins.
- Sep 28 Battle of Kut-el-Amara: British defeat Turks in Mesopotamia
- Sep 29 1st transcontinental radio telephone message is sent
- Sep 29 British army conquers Chilly al Imara, Mesopotamia
- Sep 29 Dutch Opera's 1st performance
- Sep 29 Herbert/Blossoms musical "Princess Pat" premieres in NYC
- Sep 29 Hurricane claims 275 in Mississippi Delta
- Sep 29 Philadelphia Phillies clinch their 1st pennant
- Sep 30 Red Sox clinch AL pennant by beating Detroit
- Oct 3 7.8 earthquake shakes Pleasant Valley, Nevada
- Oct 4 Dinosaur National Monument in Colorado & Utah is established
- Oct 5 Bulgaria enters World War I as one of the Central Powers.
- Oct 5 Allies land troops at the northern Greek city of Salonika; Greece is nominally neutral but allows the landing
Event of Interest
Oct 7 English nurse Edith Cavell sentenced to death along with 34 others by German court martial for running underground network to free Allied soldiers

Edith Cavell
- Oct 8 Battle of Loos on WWI Western Front ends, German forces contain British attack (85,000 casualties)
- Oct 8 Phillies win their 1st & only World Series game before 1980, beating Red Sox, 3-1, with an 8th inning 2 run rally
- Oct 9 Belgrade, Serbia, surrenders to Central leaders
- Oct 9 Gil Anderson races auto (165.1 km record) in Sheepshead Bay, New York
- Oct 9 Louis Kaufmans comedy "Unchastened Woman" premieres in New York City
Event of Interest
Oct 9 Woodrow Wilson becomes first US President to attend a World Series game

Woodrow Wilson
- Oct 11 Bulgarian anti-Serbian offensive begins
Model T
Oct 12 Ford Motor Company under Henry Ford manufactures its 1 millionth automobile at the River Rouge plant in Detroit
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Event of Interest
Oct 12 Theodore Roosevelt criticizes US citizens who identify themselves with dual nationalities

Theodore Roosevelt
- Oct 12 Despite international protest, Edith Cavell an English nurse in Belgium, is executed by the Germans for aiding the escape of Allied prisoners
- Oct 13 Boston Red Sox beat Philadelphia Phillies, 4 games to 1 in 12th World Series
- Oct 16 Great Britain declares war on Bulgaria
- Oct 18 3rd Italian offensive at Isonzo
- Oct 19 Russia and Italy declare war on Bulgaria
- Oct 19 US bankers arrange a $500 million loan to the British and French
- Oct 21 1st transatlantic radiotelephone message, Arlington, Va to Paris
Event of Interest
Oct 21 William Jennings Bryan's successor as US Secretary of State, Robert Lansing, sends a note to Britain protesting interference with US shipping

William Jennings Bryan
- Oct 23 1st national horseshoe throwing championship (Kellerton, Iowa)
Women's Suffrage March on Fifth Ave, New York
Oct 23 An estimated 25,000 supporters in a women's suffrage march on New York's Fifth Ave, led by Dr. Anna Shaw and Carrie Chapman Catt, founder of the League of Women Voters
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Event of Interest
Oct 28 Richard Strauss' Alpensymfonie, premieres in Berlin

Richard Strauss
Election of Interest
Oct 29 Aristide Briand becomes Prime Minister of France for the 3rd time

Aristide Briand
- Nov 1 Parris Island is officially designated a US Marine Corps Recruit Depot.
- Nov 2 First US election by proportional representation, Ashtabula, Ohio
- Nov 6 1st military flight in Dutch East Indies (Tandjong Priok)
- Nov 6 Sophokles Skouloudis forms Greek government
- Nov 8 An Austrian-Hungarian submarine torpedoes and sinks the Italian liner 'Ancona' without warning, killing over 200 people
- Nov 12 Britain annexes Gilbert & Ellice archipelago
- Nov 12 Theodore W Richards is 1st American to win Nobel Prize in chemistry
Event of Interest
Nov 14 Tomáš Masaryk demands independence for Czechoslovakia

Tomáš Garrigue Masaryk
- Nov 20 CFL Grey Cup, Varsity Stadium, Toronto: Hamilton Tigers win 2nd title; beat Toronto Rowing Association, 13-7
- Nov 23 On the Tigris River in Mesopotamia, the Battle of Ctesiphon between Allied and Turkish forces enters its second day
- Nov 24 Serbian leader flees to Albania
- Nov 29 Fire destroys most of the buildings on Santa Catalina Island, California.
- Nov 30 St John Ervine's "John Ferguson" premieres in Dublin
- Dec 1 The US requests that Germany withdraw its military and naval attaches from the Embassy in Washington
- Dec 3 General Joseph Joffre becomes Commander-in-Chief of the French Armies
- Dec 4 Frank Friday Fletcher is first US admiral to receive Congressional Medal of Honor
- Dec 4 Ku Klux Klan receives charter from Fulton County, Georgia
- Dec 4 Panama-Pacific International Exposition closes in San Francisco
Event of Interest
Dec 4 Henry Ford's peace ship, Oscar II, sails for Europe 'to get the boys out of the trenches by Christmas'

Henry Ford
Music Premiere
Dec 8 Jean Sibelius' 5th Symphony in E premieres

Jean Sibelius
Event of Interest
Dec 8 John McCrae's poem "In Flanders Fields" appears anonymously in "Punch" magazine

John McCrae
- Dec 12 1st all-metal aircraft (Junkers J-1) test flown at Dessau, Germany
- Dec 12 Aristide Briand forms French war government
- Dec 12 Russian troops overrun Hamadan, Persia
- Dec 20 Russian troops overrun Qom, Persia
- Dec 20 Final withdraw of all allied troops from Anzac Cove
- Dec 21 10.17" (25.83 cm) of rainfall, Glenora, Oregon (state record)
- Dec 22 Organized baseball and Federal League sign a peace treaty at Cincinnati; Federal Baseball League dissolves
- Dec 23 J Kern/S Greene's musical "Very Good Eddie" premieres in NYC
Music Premiere
Dec 25 Irving Berlin & Harry B Smith's musical premieres in NYC

Irving Berlin
- Dec 27 US Iron and Steel workers begin a 3-week strike in Ohio for a eight-hour-day; they are successful as the US needs steel for armaments
- Dec 28 San Francisco City Hall dedicated by Mayor James Rolph
- Dec 28 Today the British Cabinet recognizes the true nature of the war by deciding to institute compulsory military service, with single men to be conscripted before married ones
- Dec 30 Cromarty Harbour, Scotland - British cruiser Natal explodes: 405 die