January – The Masses socialist magazine begins publication.
March – The first installment of a serialized version of Frederick Winslow Taylor's monograph, The Principles of Scientific Management, appears in The American Magazine. The complete series runs in the March, April, and May issues, giving a boost to the efficiency movement.[1]
March 10 – The Kansas legislature approves House Bill Number 906, effectively the first blue sky law in the United States, culminating an effort by Joseph Norman Dolley, Kansas' banking commissioner.
March 29 – The United States Army formally adopts the M1911 pistol as its standard sidearm, thus giving the gun its 1911 designation.
April–Juneedit
April 13 – Mexican Revolution: Rebels take Agua Prieta on the Sonora–Arizona border; government troops take the town back April 17 when the rebel leader "Red" López is drunk.
September 30 – Austin Dam breaks, wiping out the town of Austin, Pennsylvania, and continuing downstream about 8 miles into the village of Costello.
October–Decemberedit
October 7 – Outlaw Elmer McCurdy and "associates" are chased after trying to rob a train in Oklahoma. McCurdy on the run is eventually hunted down and shot by authorities. His body is never claimed and later is chemically petrified. Afterwards his remains serve as sideshow attractions in carnivals until 1976 when they are diagnosed by forensic experts to be McCurdy. McCurdy's body is finally buried in 1976 after a 65-year odyssey to the grave.