To illustrate the depth one can access in our collections, we have compiled relevant archival imagery to frame a diverse cultural, political and chronological retrospective of noteworthy anniversaries. Be sure to bookmark this section as the calendar is a work in progress and will continue to expand.
| October | Year | Anniversary | Event |
| 1 | 1847 | 161st | Anne Besant, British educator and politician, is born. |
| 1 | 1907 | 101st | The financial Panic of 1907 pushes President Roosevelt to ask his former enemy J. P. Morgan for help. |
| 2 | 1967 | 41st | Thurgood Marshall is sworn in as Supreme Court justice, becoming the first African American on the U.S. Supreme Court. |
| 2 | 1967 | 41st | Air strikes against North Vietnam continue despite disagreements in Congress and in Pres. Johnson's cabinet. |
| 3 | 1862 | 146th | Under Gen. Van Dorn, the Confederates fail to recapture Corinth, a key rail center, when Rosecrans hands them a devastating defeat. |
| 3 | 1952 | 56th | Britain tests its first atom bomb, off the coast of Australia. |
| 4 | 1777 | 231st | Gen. Washington attacks Sir Howe's troops at Germantown, 5 miles north of the British-occupied capital, Philadelphia. |
| 4 | 1822 | 186th | Rutherford B. Hayes, future U.S. president, is born in Delaware, Ohio. |
| 4 | 1862 | 146th | Edward Stratemeyer, creator of the Hardy Boys, Bobbsey Twins, Nancy Drew, and other standardized book series, born. |
| 5 | 1877 | 131st | Nez Perce Chief Joseph surrenders to Gen. Miles, saying "My heart is sick and sad⦠I will fight no more forever." |
| 5 | 1882 | 126th | Robert Goddard, pioneering U.S. rocket scientist, is born. |
| 5 | 1892 | 116th | The Dalton Gang attempts their last robbery, in their hometown of Coffeyville, Kansas, and all but one of them are killed. |
| 5 | 1947 | 61st | Harry Truman makes the first presidential speech on TV, asking Americans to eat no meat on Tuesdays and no poultry on Sundays. |
| 6 | 1777 | 231st | The British capture Forts Montgomery and Clinton, but the Patriots block them from rescuing Cornwallis at the Battle of Saratoga. |
| 6 | 1892 | 116th | Alfred Tennyson, British poet, is born. |
| 6 | 1917 | 91st | Fannie Lou Hamer, courageous civil rights activist and delegate to the 1964 Democratic Convention, born. |
| 7 | 1777 | 231st | At Bemis Heights, the second Battle of Saratoga, Patriot Generals Lincoln and Arnold rout the British during the Revolutionary War. |
| 7 | 1897 | 111st | Elijah Muhammad, American black nationalist and U.S. leader of the Black Muslim movement, is born in Georgia. |
| 8 | 1862 | 146th | At the Battle of Perryville Union Gen. Buell halts Gen. Bragg and the Confederate invasion of Kentucky. |
| 8 | 1862 | 146th | Otto von Bismarck becomes chancellor of the German republic. |
| 9 | 1547 | 461st | Miguel de Cervantes, Spanish novelist and author of "Don Quixote de la Mancha," is baptized in Spain. |
| 9 | 1812 | 196th | On Lake Erie, U.S. forces captures two British ships, the Detroit and the Caledonia, in the War of 1812. |
| 9 | 1987 | 21st | Clare Booth Luce, U.S. politician, playwright and journalist, dies. |
| 10 | 1837 | 171st | Robert Gould Shaw, colonel of the African-American 54th Massachusetts (who will die at Fort Wagner), is born. |
| 10 | 1862 | 146th | Confederate Pres. Jefferson Davis and Robert E. Lee send John Magruder to take over the Trans-Mississippi Department in Texas. |
| 10 | 1877 | 131st | The funeral of George Custer, who died when he attacked the Dakota Indians at Little Big Horn, is held at West Point. |
| 10 | 1957 | 51st | Eisenhower apologizes to Ghanian finance minister K. A. Gbedemah, who was refused service in a Delaware restaurant. |
| 11 | 1862 | 146th | Daring raider J. E. B. Stuart - gathering intelligence on McClellan - seizes horses, supplies and local officials in Chambersburg, PA. |
| 11 | 1872 | 136th | Judge Harlan Fisk Stone, chief justice of the U.S. Supreme Court, is born. |
| 11 | 2002 | 6th | Former U.S. president Jimmy Carter wins the Nobel Peace Prize for his diplomacy in the Middle East during the 1970s. |
| 12 | 1492 | 516th | Christopher Columbus reaches the Bahama Islands, believing he has found Asia. |
| 12 | 1537 | 471st | The son of Henry VIII and Jane Seymour, England's King Edward VI (who later beheaded his cousin Lady Jane Grey) is born. |
| 12 | 1837 | 171st | Congress sanctions the use of Treasury notes but fails to calm the Panic of 1837, triggered when the Second Bank was dissolved. |
| 12 | 1962 | 46th | Secretary of State Rusk criticizes Congress for backing peace efforts and insists the U.S. continue the bombing of North Vietnam. |
| 13 | 1307 | 701st | In France, the Knights of Templar (Masons) are arrested, imprisoned, and tortured by order of King Philip the Fair. |
| 13 | 1792 | 216th | Pres. Washington lays the cornerstone of the White House, but John Adams will be the first president to live in it. |
| 14 | 1822 | 186th | French writer Victor Hugo marries his childhood sweetheart, Adele Foucher, despite the objections of his mother and brother |
| 14 | 1912 | 96th | Campaigning for president, Teddy Roosevelt is shot, but papers in his breast pocket stop the bullet and he gives his speech. |
| 14 | 1962 | 46th | Reconnaissance photos taken by an American U-2 spy plane reveal the presence of Soviet missile bases in Cuba. |
| 15 | 1872 | 136th | Edith Bolling Galt Wilson, U.S. First Lady, is born. |
| 16 | 1962 | 46th | Pres. Kennedy learns of missile bases in Cuba, which will bring the US and USSR to the brink of nuclear war |
| 17 | 1777 | 231st | In the turning point of the Revolutionary War, British forces surrender to Patriot troops in Saratoga, New York. |
| 18 | 1867 | 141st | At a cost of $7.2 million, the U.S. takes possession of Alaska from Russia. |
| 18 | 1982 | 26th | Former First Lady Bess Truman dies in Independence, Missouri. |
| 19 | 1512 | 496th | In Germany, Martin Luther receives his doctorate in theology. |
| 19 | 1882 | 126th | Explorer Henry Morton Stanley meets Pierre de Brazza, against whom he races to colonize the Congo in "the Scramble for Africa." |
| 19 | 1907 | 101st | Bankers work through the night at J. P. Morgan's New York City home to stabilize the Panic of 1907. |
| 20 | 1822 | 186th | Thomas Hughes, British writer, lawyer, politician and social reformer, is born. |
| 21 | 1772 | 236th | Samuel Taylor Coleridge, British poet of the Romantic movement, is born. |
| 21 | 1797 | 211st | The U.S. Navy frigate Constitution ("Old Ironsides" in the War of 1812), built to fight Barbary pirates, is launched in Boston's harbor. |
| 21 | 1867 | 141st | Kiowa and Comanche chiefs sign the first Medicine Lodge Treaty under the watchful eye of the U.S. generals and politicians present. |
| 21 | 1917 | 91st | The first U.S. troops to see action in World War I are assigned to the trenches in France. |
| 21 | 1957 | 51st | The Elvis Presley film "Jailhouse Rock" opens. |
| 21 | 1957 | 51st | Pres. Eisenhower decides to go on a speaking tour to bolster confidence and optimism about the U.S. economy. |
| 21 | 1967 | 41st | Some 100,000 Vietnam War protestors rally at the Lincoln Memorial, then march to and besiege the Pentagon. |
| 22 | 1962 | 46th | During the Cuban Missile Crisis, Pres. Kennedy announces an air and naval blockade of Cuba. |
| 23 | 1777 | 231st | A British fleet, trying to reach British-occupied Philadelphia, is held off by Patriot artillery at Fort Mifflin. |
| 23 | 1962 | 46th | The U.S. Defense Department releases photos showing Soviet ships on their way to Cuba. |
| 23 | 1972 | 36th | Under Nixon, Americans negotiating peace with North Vietnam ask for further talks in hopes of calming South Vietnam's fears. |
| 24 | 1537 | 471st | Henry VIII's third wife, Jane Seymour, dies 12 days after giving birth to Henry's first son, Prince Edward. |
| 24 | 1862 | 146th | Lincoln orders Gen. Rosecrans to replace Gen. Buell, because of Buell's ineffective pursuit of Gen. Bragg after Perryville. |
| 24 | 1962 | 46th | U.S. military forces prepare for war with Cuba and the Soviet Union by going to DEFCON2, a very high military alert. |
| 25 | 1912 | 96th | Richard Strauss's opera "Ariadne auf Naxos" is performed for the first time, at the Vienna State Opera in Austria. |
| 25 | 1962 | 46th | At the United Nations, U.S. Ambassador Adlai Stevenson shows photos of Soviet missiles installed in Cuba. |
| 25 | 1972 | 36th | Pres. Nixon temporarily halts bombing over North Vietnam to show his approval of its concessions during secret talks in Paris. |
| 26 | 1902 | 106th | Elizabeth Cady Stanton, U.S. suffragette, dies. |
| 26 | 1962 | 46th | Kruschchev indicates he'll dismantle Cuban missile bases and Castro will refuse more weapons if the U.S. promises not to invade Cuba. |
| 27 | 1682 | 326th | Philadelphia is founded by William Penn, who designs it to resemble a rural English town rather than a city (but to no avail). |
| 27 | 1787 | 221st | The first of the "Federalist Papers" by Hamilton, Madison and Jay, calling for ratification of the Constitution, is published in New York. |
| 27 | 1962 | 46th | During the Cuban Missile Crisis, Khrushchev offers to remove his Cuban bases if JFK removes U.S. bases from Turkey. |
| 28 | 1492 | 516th | Christopher Columbus lands in Cuba. |
| 28 | 1922 | 86th | With the so-called "March on Rome," Fascist leader Benito Mussolini takes control of Italy's government. |
| 28 | 1962 | 46th | The Cuban Missile Crisis ends when Khrushchev announces he intends to remove all Soviet offensive weapons from Cuba. |
| 29 | 1682 | 326th | William Penn, founder of Pennsylvania, lands at the place that became Chester, Pennsylvania. |
| 29 | 1787 | 221st | Mozart's opera "Don Giovanni" is first performed, in Prague. |
| 29 | 1922 | 86th | Mussolini becomes the youngest prime minister in Italian history, at age 39, and institutes fascism throughout Italy. |
| 29 | 1947 | 61st | Former First Lady Frances Folsom Cleveland, who when Cleveland was 49 and she was his 21-year-old ward, dies at age 83. |
| 30 | 1862 | 146th | Ormsby MacKnight Mitchel, renowned astronomer who became a Union major general, dies of yellow fever during the Civil War. |
| 30 | 1912 | 96th | James S. Sherman, banker and politician who became Taft's vice president, dies. |
| 31 | 1517 | 491st | Martin Luther posts his "95 Theses" on the door of the Wittenberg Palace church, triggering the Protestant Reformation. |
| 31 | 1897 | 111st | Chiang Kai-Shek, Chinese Nationalist, first constitutionally elected president of the Chinese Republic, is born. |
| 31 | 1912 | 96th | The world's first gangster film, "Musketeers of Pig Alley" by Anita Loos and D. W. Griffith (shot with actual gang members), opens. |