Portal:United States/Anniversaries/May/May 30
- 1539 – In Florida, Hernando de Soto lands at Tampa Bay with 600 soldiers with the goal of finding gold.
- 1879 – New York City's Gilmores Garden is renamed Madison Square Garden by William Henry Vanderbilt and is opened to the public.
- 1922 – In Washington, D.C., the Lincoln Memorial is officially dedicated.
- 1948 – A dike along the flooding Columbia River breaks, obliterating Vanport, Oregon within minutes. Fifteen people die and tens of thousands are left homeless.
- 1958 – The remains of two unidentified American servicemen, one killed in action during World War II and the other in the Korean War, are buried at the Tomb of the Unknown Soldier (pictured) in Arlington National Cemetery.
On this day for the United States
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Events
- 1806 – Andrew Jackson kills Charles Dickinson in a duel after the man had accused Jackson's wife of bigamy.
- 1854 – The Kansas–Nebraska Act becomes law establishing the US territories of Nebraska and Kansas.
- 1868 – Decoration Day (the predecessor of the modern "Memorial Day") observed in the United States for the first time (By "Commander–in–chief of the Grand Army of the Republic" John A. Logan's proclamation on May 5).
- 1879 – New York City's Gilmores Garden is renamed Madison Square Garden by William Henry Vanderbilt and is opened to the public at 26th Street and Madison Avenue.
- 1879 – An F4 tornado strikes Irving, Kansas, killing 18 and injuring 60.
- 1883 – In New York City, a rumor that the Brooklyn Bridge is going to collapse causes a stampede which crushes twelve people.
- 1911 – At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun becoming the first winner of the 500–mile auto race in his Marmon Wasp.
- 1914 – New & then-largest Cunard ocean liner RMS Aquitania, 45,647 tons, sails on her maiden voyage from Liverpool, England, to New York City.
- 1922 – In Washington, D.C., the Lincoln Memorial is dedicated.
- 1948 – A dike along the flooding Columbia River breaks, obliterating Vanport, Oregon within minutes. Fifteen people die and tens of thousands are left homeless.
- 1958 – Memorial Day: The remains of two unidentified American servicemen, killed in action during World War II and the Korean War, are buried at the Tomb of the Unknowns in Arlington National Cemetery.
- 1967 – At the Ascot Park in Gardena, California, daredevil Evel Knievel jumps his motorcycle over 16 cars lined–up in a row.
- 1971 – Mariner program: Mariner 9 launched to Map 70% of the surface and study temporal changes in the atmosphere and surface of Mars.