Lieutenant Governor of Kansas: James McGrew (Republican) (until month and day unknown), Nehemiah Green (Republican) (starting month and day unknown)
Lieutenant Governor of Kentucky:
until September 3: vacant
September 3-September 8: John White Stevenson (political party unknown)
starting September 8: Preston H. Leslie (political party unknown)
Lieutenant Governor of Louisiana: vacant
Lieutenant Governor of Maryland: Christopher C. Cox (Unionist)
Lieutenant Governor of Massachusetts: William Clafin (political party unknown)
Lieutenant Governor of Michigan: Ebenezer O. Grosvenor (Republican) (until month and day unknown), Dwight May (Republican) (starting month and day unknown)
Lieutenant Governor of Minnesota: Thomas H. Armstrong (Republican)
Lieutenant Governor of Missouri: George Smith (Republican)
Lieutenant Governor of Nevada: John S. Crosman (political party unknown) (until month and day unknown), James S. Slingerland (political party unknown) (starting month and day unknown)
Lieutenant Governor of New York: Stewart L. Woodford (Republican) (starting January 1)
Lieutenant Governor of Ohio: Andrew McBurney (Republican)
Lieutenant Governor of Rhode Island: William Greene (political party unknown)
Lieutenant Governor of South Carolina: W. D. Porter (Democratic)
Lieutenant Governor of Texas: George Washington Jones (Democratic) (until August 8), vacant (starting August 8)
Lieutenant Governor of Vermont: Abraham B. Gardner (Republican) (until October 13), Stephen Thomas (Republican) (starting October 13)
Lieutenant Governor of Virginia: Leopold Copeland Parker Cowper (Whig)
Lieutenant Governor of Wisconsin: Wyman Spooner (Republican)
Events
January–March
March 30: Alaska Purchase
January 1 – The John A. Roebling Suspension Bridge opens between Cincinnati, Ohio and Covington, Kentucky, becoming the longest suspension bridge in the world.
January 8 – African-American men are granted the right to vote in the District of Columbia.
February 7
West Virginia University is established in Morgantown, West Virginia.
Laura Ingalls Wilder is born near Pepin, Wisconsin
March – The University of Illinois at Urbana–Champaign is established (it opens for classes on March 2, 1868).
March 1 – Nebraska is admitted as the 37th U.S. state (seeHistory of Nebraska).
March 2 – Wager Swayne is sworn in as the military governor of Alabama effectively.
April–June
May 28 – Alaska is purchased for $7.2 million from Alexander II of Russia, about 2 cent/acre ($4.19/km²), by United States Secretary of State William H. Seward. The news media call this "Seward's Folly."
June 15 – The Atlantic Cable Quartz Lode mine is named in Montana.
June 29 – Kidder massacre: A Sioux and Cheyenne war party kills U.S. Second Lieutenant Lyman Kidder, along with an Indian scout and ten enlisted men in Kansas.
July–September
July 2 – The first elevated railroad in the U.S. begins service in New York.
July 17 – In Boston, Massachusetts, the Harvard School of Dental Medicine is established as the first dental school in the United States.
September 30 – The United States takes control of Midway Island.
October–December
"A Brush for the Lead", lithograph by Currier and Ives, 1867
October 18 – U.S. takes formal possession of Alaska from Russia, paying $7.2 million.
October 21 – Manifest Destiny – Medicine Lodge Treaty: Near Medicine Lodge Creek, Kansas, a landmark treaty is signed by southern Great Plains Indian leaders. The treaty requires Native American Plains tribes to relocate to a reservation in western Oklahoma.
November 15 – Former Minnesota farmer Oliver Hudson Kelley founds the Order of the Patrons of Husbandry (better known today as The Grange).
December 2 – In a New York City theater, British author Charles Dickens gives his first public reading in the United States.
December 18 – 49 people are killed in a train crash in Angola, New York.
Undated
Yellow fever kills 3,093 in New Orleans.
At historic Fountain Point, Michigan, an artesian water spring gushes continuously until the present day.
1867–1873 – Chinese, Scandinavian and Irish immigrants lay 30,000 miles (48,000 km) of railroad tracks in the United States.
Clarke School for the Deaf in Northampton, Massachusetts opens its doors for the first time, becoming the first school for the deaf in the United States to teach deaf children how to communicate with others using the "oral method".
March 6 – Charles Farrar Browne ("Artemus Ward"), humorist (born 1834) (tuberculosis)
March 16 – Benjamin Hanby, songwriter (born 1833) (tuberculosis)
March 29 – George R. Riddle, U.S. Senator from Delaware from 1864 to 1867 (born 1817)
April 3 – George W. Randolph, lawyer, planter, Confederate general, 3rd Confederate States Secretary of War (born 1818)
May 11 – Joseph A. Wright, U.S. Senator from Indiana from 1862 to 1863 (born 1810)
May 27 – Thomas Bulfinch, collector of myths and legends (born 1796)
July 3 – Lazarus W. Powell, U.S. Senator from Kentucky from 1859 to 1865 (born 1812)
July 31 – Catharine Sedgwick, novelist (born 1789)
September 3 – James A. McDougall, U.S. Senator from California from 1861 to 1867 (born 1817)
September 23 – Michael O'Laughlen, Conspirator in the Assassination of Abraham Lincoln (born 1840) (yellow fever)
September 26 – James Ferguson, Scottish-born astronomer and engineer (born 1797)
September 29 – Sterling Price, 11th governor of Missouri, United States Army brigadier general in the Mexican–American War, Confederate Army major general in the American Civil War (born 1809)
October 7 – Henry Timrod, poet (born 1829) (tuberculosis)
November 19 – Fitz-Greene Halleck, poet (born 1790)
December 3 – Margaret Lea Houston, First Lady of the Republic of Texas (born 1819)
^Clifton J., Philips (1971). "Fearn, Anne Walter". In James, Edward T. (ed.). Notable American Women, 1607-1950: A Biographical Dictionary. Vol. 1. p. 603. ISBN 978-0-67462-734-5.