September 27 - Taft sets aside over 3 million acres of land as the country's first Naval oil reserve.[10]
October 16 - Taft meets with Mexican President Porfirio Díaz in El Paso, Texas. He becomes the first sitting president to visit a foreign country when he dines with Díaz in Ciudad Juárez.[11]
June 27 - Robert A. Taft accidentally strikes a pedestrian with his car. President Taft offers compensation in addition to covering medical expenses.[21]
July 2 - Taft sets aside nearly 8.5 million acres as federal land in Alaska.[22]
July 7 - Taft sets aside over 35 million acres of federal land in the Western United States for coal mining.[23]
October 16 - Two men place dynamite on a railroad in California ahead of Taft's car. Security guard Abe Jenkins discovers the dynamite before the president arrives.[37]
October 26 - Taft files an antitrust suit against U.S. Steel.
November 2 - Taft inspects the Naval fleet as he receives a 3,690 gun salute.[38]
January 6 - New Mexico is admitted as the 47th state.
January 18 - Taft pardons Charles W. Morse, believing him to be terminally ill.
February 6 - Taft declares his intention to name William Cather Hook as a Supreme Court nominee. He rescinds the suggestion following backlash from the African-American community.[41]
February 14 - Arizona is admitted as the 48th state.
February 19 - Taft nominates Mahlon Pitney to the Supreme Court of the United States.
February 22 - Former President Theodore Roosevelt announces his candidacy for the Republican presidential nomination.
March 2 - Taft urges that American citizens prepare to evacuate Mexico as the Mexican Revolution escalates.[42]
March 13 - Mahlon Pitney is confirmed as an Associate Justice.
March 14 - Taft issues an embargo on weapon sales to Mexico.[43]
March 19 - North Dakota hosts the first ever statewide primary. Taft finishes third behind Theodore Roosevelt and Robert M. La Follette.[44]
February 8 - Taft personally attends a session of Congress to deliver a eulogy for Vice President James S. Sherman. This is the first time a president has attended a session of Congress personally since 1801.[55]
February 14 - Taft vetoes an immigration bill that would require literacy tests.[56]
February 22 - Taft deploys thousands of soldiers to Galveston, Texas to prepare for potential war with Mexico.[57][58]
^Lita Epstein, C.D. Jaco, and Julianne C. Iwersen-Niemann, The Complete Idiot's Guide to the Politics of Oil (Alpha Books, 2003), pp131–132; Samuel P. Hays, Conservation and the Gospel of Efficiency: The Progressive Conservation Movement, 1890–1920 (University of Pittsburgh Press, 1999), pp 89–90
^"Taft Shakes Hands With 5,575 Persons". The New York Times. January 2, 1910. p. 1.
^"Railroad Leaders Appeal In Person",, Indianapolis Star, January 4, 1910, p2
^"Pinchot Fired By Taft; 'Usefulness Destroyed'". Atlanta Constitution. January 8, 1910. p. 1.
^"President Taft Throws First Ball Over Plate", Atlanta Constitution, April 15, 1910, p 13; John Sayle Watterson, The Games Presidents Play: Sports and the Presidency (Johns Hopkins University Press, 2006) p 84
^"Taft Citizen For Day At Old Home". Indianapolis Star. May 4, 1910. p. 1.
^"Signs With Eagle's Feather", New York Times, June 21, 1910, p3
^Michael L. Bromley, William Howard Taft and the First Motoring Presidency (McFarland & Co. 2003), pp276–277; "Robert Taft in AutoRuns Over Laborer", New York Times, June 28, 1910, p1
^"Taft Preserves Land Under the New Law". The New York Times. July 4, 1910. p. 1.
^"Taft Withdraws Big Coal Tracts". The New York Times. July 8, 1910. p. 2.
^"Pledge to Panama; Mr. Taft Tells Isthmians We Do Not Seek Annexation", Washington Post, November 17, 1910, p1
^"Taft Home Again From Panama Trip", New York Times, November 24, 1910, p8
^"Miss Taft's Debut", Washington Post, December 2, 1910, p. 1
^Lewis, Ronald L. (1998). Transforming the Appalachian Countryside: Railroads, Deforestation, and Social Change in West Virginia, 1880-1920. UNC Press Books. p. 288.
^"President Calls a Special Session", New York Times, March 5, 1911, p1
^"Admiral Togo Here as Nation's Guest", The New York Times, August 4, 1911, p1
^"President Goes to Beverly", The New York Times, August 11, 1911
^"President Vetoes the Statehood Bill", The New York Times, August 16, 1911, p1; Steven L. Piott, Giving Voters a Voice: The Origins of the Initiative and Referendum in America (University of Missouri Press, 2003) p145
^ ab"President Taft Ends His 15,000 Mile Tour", The New York Times, November 12, 1911
^"Taft Breaks Earth for Panama Fair". The New York Times. October 15, 1911.
^Ray Gamache, A History of Sports Highlights: Replayed Plays from Edison to ESPN (McFarland, 2010) p. 47; Important Federal Laws (B.F. Bowen, 1917) p. 653
^C. D. Bay-Hansen and Christine Mager Wevik, Power Geopolitics in the Pacific Age: East Asia, the United Nations, the United States and Micronesia at the Edge of the 21st Century, 1991-2001 (First Books, 2011) p. 192