** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

** Every infinite game in which is a Borel subset of Baire space is determined.

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.

** Spanish Royal Governor of the Philippines

** Governor of the Faroe Islands

** Ibrahim, Governor of Eskişehir ( 1316 – 1362 ).

** Pennsylvania Governor William Scranton announces his candidacy for the Republican Presidential nomination, as part of a ' stop-Goldwater ' movement.

** Sarah Palin, American politician, former Governor of Alaska

** Jeanne Sauvé, Canadian Governor General ( b. 1922 )

** American Civil Rights Movement – Little Rock Crisis: Governor Orville Faubus of Arkansas calls out the US National Guard, to prevent African-American students from enrolling in Central High School in Little Rock.

** Alfred Walton Hinds, 17th Naval Governor of Guam ( b. 1874 )

** Adrienne Clarkson, 26th Governor General of Canada

** Carlton Skinner, Governor of Guam ( d. 2004 )

** Robert Stafford, Governor of Vermont, U. S Representative and U. S. Senator ( d. 2006 )

** Joshua Chamberlain, leader of the 20th Maine during the American Civil War, Governor of Maine, President of Bowdoin College in Brunswick, Maine ( d. 1914 )

** John Milton, Governor of Florida ( b. 1807 )

** Hans Frank, German Nazi Governor General of Poland ( b. 1900 )

** Francis William Drake, British admiral and Governor of Newfoundland ( b. 1724 )

** Pat Brown, Governor of California ( b. 1905 )

** Alabama Governor George C. Wallace stands in the door of the University of Alabama to protest against integration, before stepping aside and allowing African Americans James Hood and Vivian Malone to enroll.

** John F. Kennedy assassination: In Dallas, Texas, United States President John F. Kennedy is assassinated, Texas Governor John B. Connally is seriously wounded, and Vice President Lyndon Baines Johnson becomes the 36th President.

** Governor William Goebel of Kentucky dies of wounds after being shot by several assassins on January 30.

** Albert Walsh, Lieutenant Governor of Newfoundland ( d. 1958 )

** Luis A. Ferre is elected Governor of Puerto Rico.

** William Michael Crose, United States Navy Commander and the seventh Naval Governor of American Samoa ( b. 1867 )

** Thomas Darden, American Rear admiral, 37th Governor of American Samoa ( b. 1900 )

** Sir Douglas Nicholls appointed 28th Governor of South Australia, the first Australian Aboriginal appointed to vice-regal office.

** Governor George C. Wallace of Alabama is shot by Arthur Herman Bremer at a Laurel, Maryland political rally.