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.
| August | Year | Anniversary | Event |
| 1 | 1852 | 156th | San Francisco Methodists open the first black church in the U.S. - Zion Methodist. |
| 1 | 1867 | 141st | African Americans vote for the first time in a southern state. |
| 1 | 1942 | 66th | Jerry Garcia, rock and roll musician from the Grateful Dead, is born. |
| 2 | 1832 | 176th | Chief Black Hawk is defeated in Iowa by the U.S. Army, ending the Black Hawk War. |
| 2 | 1832 | 176th | Captain Abraham Lincoln belongs to 1,300 state militia who defeat the Sac and Fox Indians in Illinois. |
| 2 | 1887 | 121st | Rowell Hodge patents spur barbed wire, which begins the end of the open range on the U.S. frontier. |
| 3 | 1492 | 516th | Half an hour before sunrise, Christopher Columbus sets sail from Palos, Spain, heading for the "Indies," in the Nina, the Pinta and the Santa Maria |
| 3 | 1852 | 156th | Harvard beats Yale by 4 lengths in the first U.S. intercollegiate rowing race, before a crowd that includes Gen. Franklin Pierce, future president. |
| 3 | 1967 | 41st | LBJ announces he will send 45,000 more soldiers to Vietnam. |
| 4 | 1792 | 216th | Percy Bysshe Shelley, British poet who will marry writer Mary Wollstonecraft Shelley, is born. |
| 4 | 1862 | 146th | Due to heavy war expenses, the U.S. collects its first official income tax, with the Internal Revenue Act of 1862, designed by Justin Morrill. |
| 4 | 1942 | 66th | Britain's Prime Minister Winston Churchill arrives in Cairo for international meetings about the war. |
| 5 | 1962 | 46th | Marilyn Monroe is found dead in her home, apparently of an accidental drug overdose. |
| 5 | 2002 | 6th | The gun turret of the Civil War ironclad USS Monitor is raised from the ocean floor. |
| 6 | 1787 | 221st | The first draft of the Constitution is debated in Philadelphia, the nation's capital, by the Constitutional Convention. |
| 6 | 1862 | 146th | When the Confederate ironclad "Arkansas" runs aground, its crew blows up the newly made ship to prevent its capture by the USS Essex. |
| 7 | 1742 | 266th | Nathanael Greene, American Revolutionary War general, is born to Quaker parents. |
| 7 | 1782 | 226th | George Washington creates the Purple Heart Award, soon forgotten but reinstated by Gen. MacArthur in 1932. |
| 7 | 1912 | 96th | Teddy Roosevelt is nominated the Bull Moose Party presidential candidate, opposing William Taft (R) and Woodrow Wilson (D). |
| 8 | 1942 | 66th | Six Nazi saboteurs, convicted by a military tribunal authorized by FDR, are executed by electrocution in Washington, DC. |
| 8 | 1972 | 36th | First Lady Pat Nixon asks actress Jane Fonda to give up her activism against the war in Vietnam. |
| 9 | 1862 | 146th | At the Battle of Ced Mountain, Confederates Stonewall Jackson and Ambrose Hill narrowly beat Union generals Pope and Banks. |
| 9 | 1877 | 131st | In the Battle of Big Hole, Col. John Gibbon attacks the sleeping band of Nez Perce who are attempting to flee to Canada. |
| 9 | 1902 | 106th | Albert Edward, Prince of Wales, is crowned England's King Edward VII, upon the death of his mother Queen Victoria. |
| 10 | 1962 | 46th | Silver, gold's rival throughout history, gets more precious as its price climbs to $1.08, the highest since the start of the century. |
| 10 | 1972 | 36th | North Vietnamese forces attempt to cut off Saigon. |
| 11 | 1807 | 201st | David Atchison, proslavery senator from Missouri and rival of antislavery Missouri Sen. Thomas H. Benton, born. |
| 11 | 1967 | 41st | U.S. pilots are cleared to bomb Hanoi-Haiphong area. |
| 12 | 1827 | 181st | William Blake, British poet and painter, dies. |
| 12 | 1862 | 146th | Confederate general and raider John Hunt Morgan captures a Federal garrison at Gallatin, cutting off supplies to Union Gen. Don Carlos Buell. |
| 12 | 1877 | 131st | Thomas Edison writes down the fundamentals of the phonograph and gives the instructions to his assistant. |
| 13 | 1732 | 276th | "Zaire," a tragedy by French Enlightenment thinker Voltaire, premieres in Paris, after Voltaire's return from exile. |
| 13 | 1792 | 216th | After storming the Tuileries Palace, French revolutionaries imprison their queen, Marie Antoinette, preparing for the guillotine. |
| 13 | 1932 | 76th | Hitler refuses Paul von Hindenburg's offer of the position opf vice-chancellor of Germany and demands to become chancellor. |
| 14 | 1842 | 166th | The second Seminole War, in which Zachary Taylor uses bloodhounds to attack the Indians - ends as the Seminoles are removed from Florida. |
| 14 | 1862 | 146th | Confederate Gen. E. K. Smith begins the invasion of Kentucky (a Northern state), to pull Union Gen. D. C. Buell away from Tennessee. |
| 14 | 1862 | 146th | At the White House, Lincoln receives 5 free black clergymen, the first African American group to meet with a U.S. president on policy issues. |
| 14 | 1942 | 66th | Gen. Eisenhower is named commander for the invasion of North Africa by the Combined Chiefs of Staff. |
| 14 | 1947 | 61st | India is granted independence from the British Commonwealth. |
| 15 | 1877 | 131st | Thomas Edison gains sudden fame by making the first ever phonograph recording, reciting "Mary Had a Little Lamb." |
| 15 | 1892 | 116th | British Prime minister Gladstone, a constant thorn in the side of Disraeli and Queen Victoria, forms his 4th and final government. |
| 16 | 1812 | 196th | Gen. William Hull surrenders Fort Detroit to the British without a fight, for which he's denounced by Lewis Cass, but saved from execution by Pres. Madison. |
| 16 | 1967 | 41st | Pres. Lyndon Johnson's Tonkin Gulf Resolution is challenged by Sen. Fulbright, who opposes LBJ's escalation of the Vietnam War. |
| 16 | 1977 | 31st | Elvis Presley, rock and roll singer, dies as a result of his barbiturate addiction. |
| 17 | 1862 | 146th | Daring General J. E. B. Stuart receives command of all cavalry of the Confederate Army of Northern Virginia. |
| 17 | 1862 | 146th | The Dakota Uprising begins in Minnesota, where the Dakota face starvation, and John Pope is sent to put it down. |
| 17 | 1877 | 131st | A teenager called Billy the Kid commits his first murder, shooting blacksmith Frank Cahill in Arizona. |
| 17 | 1962 | 46th | East German troops kill 18-year-old Peter Fechter as he tries to cross the Berlin Wall, triggering widespread violence. |
| 18 | 1807 | 201st | The first workable U.S. steamboat, Robert Fulton's "Clermont," starts its maiden voyage from New York City up the Hudson River. |
| 18 | 1862 | 146th | Gen. "Jeb" Stuart's famous plumed hat is captured by Union cavalrymen in an embarassing early morning surprise attack. |
| 19 | 1812 | 196th | The USS Constitution, "Old Ironsides," defeats the British ship HMS Guerriere near Nova Scotia in the War of 1812. |
| 19 | 1862 | 146th | The Santee of Minnesota, under Chief Little Crow, bypass Fort Ridgely and attack white settlers. |
| 19 | 1972 | 36th | Democratic presidential candidate Sen. George McGovern attacks Nixon's Vietnam policy. |
| 20 | 1667 | 341st | British poet John Milton publishes "Paradise Lost," his epic about Adam and Eve in the Garden of Eden. |
| 20 | 1862 | 146th | Horace Greeley's "Prayer of Twenty Millions" attacks Lincoln for his lenience with Northern slaveholders and demands emancipation. |
| 20 | 1862 | 146th | The National Labor Union unsuccessfully calls on Congress for an 8-hour workday (which won't happen until FDR is president). |
| 21 | 1972 | 36th | The first hot air balloon flight over the Alps is accomplished by Donald Cameron. |
| 21 | 1987 | 21st | The Dow peaks at 2772.4 points after a record-breaking 6 years, but Wall Street is soon engulfed in scandal. |
| 22 | 1862 | 146th | Pres. Lincoln replies to Horace Greeley's fiery abolitionist editorial, "The Prayer of Twenty Million." |
| 22 | 1962 | 46th | Pres. Kennedy reports a stalemate in Vietnam, as the numbers of Viet Cong grow despite South Vietnamese victories. |
| 23 | 1857 | 151st | The Stock Market of 1857 ends an economic boom, plunging Eastern cities into unemployment and hunger. |
| 23 | 1862 | 146th | At Big Hill, in the Confederate invasion of Kentucky, Union Gen. Nelson fails to repel Gen. Kirby Smith's invading troops. |
| 24 | 1662 | 346th | When Cromwell's reign ends, the Act of Uniformity reinstates Episcopalian rule and the Book of Common Prayer. |
| 24 | 1787 | 221st | Wolfgang Amdeus Mozart completes his Violin Sonata in A Major. |
| 24 | 1912 | 96th | The District of Alaska becomes Alaska Territory and is incorporated in the U.S. |
| 24 | 1932 | 76th | Amelia Earhart becomes the first woman to fly nonstop across the U.S., which she does in just over 19 hours. |
| 25 | 1967 | 41st | Secretary of Defense Robert McNamara concedes that the bombing of Vietnam is not succeeding. |
| 26 | 1847 | 161st | Liberia is proclaimed an independent republic. |
| 26 | 1862 | 146th | The 2nd Bull Run Campaign begins as Fitzhugh Lee's men capture Manassas, looting and destroying Gen. Pope's supply depot. |
| 26 | 1957 | 51st | The USSR announces it has tested an IBM and JFK accuses Pres. Eisenhower of falling behind in the arms race. |
| 27 | 1942 | 66th | Transport No. 24 departs from Paris deporting French Jews to Auschwitz Concentration Camp in Nazi Germany. |
| 27 | 1952 | 56th | McCarthyism dominates U.S. politics as the presidential race between Dwight Eisenhower and Adlai Stevenson heats up. |
| 28 | 1862 | 146th | After 2 days scouring Manassas for Stonewall Jackson, Pope is suddenly attacked by Jackson's men, who've been hiding in the woods. |
| 28 | 1917 | 91st | Ten suffragettes are arrested for picketing Pres. Wilson in front of the White House. |
| 28 | 1967 | 41st | Sen. Mike Mansfield presents the Senate with a proposal to bring a Vietnam peace plan before the United Nations. |
| 28 | 1972 | 36th | Pres. Nixon, campaigning for re-election, announces that the military draft will end by July of 1973. |
| 29 | 1862 | 146th | Lee delivers a stunning blow to Pope at 2nd Bull Run, where Union troops are decimated. |
| 29 | 1862 | 146th | Maurice Maeterlinck, Belgian Nobel Prize winning poet and playwright, is born. |
| 29 | 1877 | 131st | Brigham Young, an early Mormon leader, dies in Utah. |
| 29 | 1962 | 46th | U.S. poet Robert Frost embarks on a goodwill tour of the USSR. |
| 30 | 1862 | 146th | At the Battle of Richmond, KY, Gen. Wright's inexperienced Union troops suffer complete defeat at the hands of E. Kirby Smith. |
| 30 | 1967 | 41st | Thurgood Marshall is conformed by the U.S. Senate to become a Supreme Court Justice, the first African American to do so. |
| 31 | 1887 | 121st | Thomas Edison patents his "Kinetoscope" or "Kinetograph." |
| 31 | 1967 | 41st | Criticizing Robert McNamara, a Senate committee demands more bombing of N. Vietnam and LBJ yields to the "Hawks." |