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February 8 – The Boy Scouts of America youth organization is incorporated by William D. Boyce.
February 16–18 – The state of Ohio is crippled by a snowstorm.
March 9 – The 17-month-long Westmoreland County coal strike of 1910–11, which at its peak will involve 15,000 coal miners represented by the United Mine Workers across 65 mines, begins in Westmoreland County, Pennsylvania.
March 14 – The Lakeview Gusher is vented into the atmosphere.
March 19 – Republicans reduce the powers of the Speaker of the House of Representatives to influence committee membership.
March 30 – The Mississippi Legislature founds The University of Southern Mississippi.
April–June[]
April 6 – Wildwood Crest, New Jersey is incorporated as a borough of Cape May County, New Jersey.
May 11 – The U.S. Congress establishes Glacier National Park in Montana.
May 16 – The U.S. Congress authorizes the creation of the United States Bureau of Mines.
June 19 – The first unofficial Father's Day is observed.
July–September[]
July 4 – African-American boxer Jack Johnson defeats white boxer James J. Jeffries in a heavyweight boxing match, sparking race riots across the United States.
July 22 – A wireless telegraph sent from the S.S. Montrose results in the identification and later arrest and execution of murderer Dr. Hawley Crippen.
July 24 – James MacGillivray publishes the first account of Paul Bunyan in the Detroit News.
August 20 & 21 – The Great Fire of 1910 wildfire burns about 3 million acres (12,000 km2) in northeast Washington, northern Idaho, and western Montana over 2 days and kills 86 people (believed to be the largest fire in recorded United States history).
October–December[]
October 1 – Los Angeles Times bombing: A bomb explodes at the Los Angeles Times building, leaving 21 dead and several injured, James B. McNamara and John Joseph McNamara are later arrested and sentenced.
October 10 – Tau Epsilon Phi fraternity was founded by ten Jewish men at Columbia University as a response to the existence of similar organizations which would not admit Jewish members.
October 11 – Theodore Roosevelt becomes the first former president to ride in an airplane.
November – John Lomax's pioneering collection Cowboy Songs and Other Frontier Ballads is published by Sturgis and Walton with an introduction by Theodore Roosevelt.
November 4 – Antonio Rodríguez is burned at the stake near Rocksprings, Texas after being arrested a few days earlier for the murder of Mrs. Lem Henderson at her ranch. His murder incites race riots in both Texas and Mexico.[1]
November 7 – The first air flight for the purpose of delivering commercialfreight is made between Dayton and Columbus, both in Ohio, by the Wright Brothers and department store owner Max Moorehouse. Philip Parmalee was the pilot.
November 17 – Ralph Johnstone, a pilot for the Wright Exhibition Team, dies at Denver, Colorado after his machine breaks apart in mid-air in full view of about 5,000 spectators. Johnstone becomes the first American pilot to die in the crash of an airplane in the United States.
November 22 – U.S. Senator Aldrich and A.P. Andrews (Assistant Secretary of the Treasury Department), along with many of the country's leading financiers, who together represent about 1/6 of the world's wealth, are witnessed leaving Hoboken, New Jersey on a train together. They later arrive at the Jekyll Island Club to discuss monetary policy and the banking system, an event which some say is the impetus for the creation of the Federal Reserve.
December 12 – New York CitysocialiteDorothy Arnold disappears. Her family does not notify the police until 6 weeks later, after their own investigations fail to produce any results.
December 31 – Two of America's premier pioneer aviators are killed on this day: John Moisant in New Orleans and Wright pilot Arch Hoxsey in Los Angeles.
Undated[]
US census shows that 20.9% of the population classed as "Negro" are of mixed race.