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.
| July | Year | Anniversary | Event |
| 1 | 1847 | 161st | The U.S. Post Office issues its first stamps. |
| 1 | 1862 | 146th | At the Battle of Malvern Hill, the last of the Seven Days' battles, Union artillery repulses Confederate attackers |
| 1 | 1862 | 146th | The Union gunboats Galena, Monitor, and Mahaska shell the Confederates at Harrison's Landing, on the James River. |
| 1 | 1862 | 146th | The Bureau of Internal Revenue is established by Congress. |
| 1 | 1867 | 141st | Canada wins its independence and becomes a "self-governing dominion" of Great Britain. |
| 1 | 1997 | 11st | Hong Kong reverts to Chinese rule after 156 years as a British colony. |
| 2 | 1777 | 231st | Vermont becomes the first U.S. colony to abolish slavery, nearly 100 years before the federal government. |
| 2 | 1857 | 151st | New York City's first elevated railroad begins operation |
| 2 | 1887 | 121st | "Leslie's Illustrated Newspaper" welcomes immigrants to "The Land of Freedom." |
| 2 | 1947 | 61st | The Soviet Union rejects help from the Marshall Plan. |
| 2 | 1972 | 36th | "The New York Times" admires Pres. Nixon for his trips to the Soviet Union and China |
| 2 | 1992 | 16th | The Chevrolet company celebrates the sale of one million Corvettes. |
| 3 | 1957 | 51st | Nikita Khruschev takes control in the Soviet Union after years of jockeying for power. |
| 3 | 1962 | 46th | Jackie Robinson becomes the first African-American to be inducted into the Baseball Hall of Fame. |
| 4 | 1802 | 206th | The new U.S. Military Academy opens at West Point, New York. |
| 4 | 1817 | 191st | Construction begins on the Erie Canal, which will connect the Hudson River with Lake Erie. |
| 4 | 1832 | 176th | "America" ("My Country 'Tis of Thee"), by Samuel F. Smith, is sung in public for the first time, on the 4th of July at Boston's Park St. Church. |
| 4 | 1872 | 136th | Calvin Coolidge, 30th president of the United States, is born in Plymouth, Vermont. |
| 5 | 1797 | 211st | George Washington writes a letter to help Lund Washington secure passage for two sheep on a sailing vessel. |
| 5 | 1902 | 106th | Henry Cabot Lodge, U.S. politician and diplomat, is born. |
| 6 | 1832 | 176th | Maximilian, an Austrian archduke who will become Emperor of Mexico, is born in Vienna. |
| 6 | 1862 | 146th | Samuel Clemens begins as a reporter in Virginia City, Nevada, using the name "Mark Twain." |
| 6 | 1892 | 116th | At the Homestead Steel Company, owned by Andrew Carnegie, 300 Pinkerton detectives clash with striking workers. |
| 8 | 1777 | 231st | Vermont is the first American colony to abolish slavery. |
| 8 | 1822 | 186th | Percy Bysshe Shelley, a British Romantic poet and husband of writer Mary Wollstonecraft Shelley, dies. |
| 8 | 1922 | 86th | Young Louis Armstrong leaves the Jim Crow laws of New Orleans, his hometown, to head north to Chicago. |
| 8 | 1932 | 76th | The U.S. stock market falls to its lowest point during the Depression |
| 9 | 1777 | 231st | New York State elects Revolutionary War Gen. George Clinton (uncle of Dewitt Clinton) to be its first governor. |
| 9 | 1877 | 131st | Wimbledon's "All England Croquet and Lawn Tennis Club" organizes the first Wimbledon tennis tournament. |
| 9 | 1892 | 116th | A showdown between steel workers and 7,000 Pennsylvania troops turns violent at the Homestead Steel plant, owned by Andrew Carnegie. |
| 9 | 1947 | 61st | Eisenhower makes a female soldier a lieutenant colonel and the first woman to hold permanent military rank in the U.S. |
| 10 | 1832 | 176th | Pres. Andrew Jackson vetoes legislation to renew the charter of the nation's corrupt Second Bank. |
| 10 | 1867 | 141st | Finley Peter Dunne, journalist and satirist who created the Mr. Dooley columns, is born. |
| 11 | 1767 | 241st | John Quincy Adams, 6th president of the U.S., is born in Braintree (now Quincy), Massachusetts. |
| 11 | 1782 | 226th | The British evacuate Savannah, Georgia, to flee to Charleston, following Lord Cornwallis's surrender to George Washington at Yorktown, VA. |
| 11 | 1937 | 71st | George Gershwin, a U.S. composer of popular music, dies. |
| 11 | 1977 | 31st | Dr. Martin Luther King, Jr., is posthumously awarded the Presidential Medal of Freedom, for his efforts for civil rights. |
| 12 | 1817 | 191st | Henry David Thoreau, U.S. essayist and philosopher, is born. |
| 12 | 1862 | 146th | During the Civil War, Congress authorizes the Medal of Honor for wartime service. |
| 12 | 1912 | 96th | The first foreign film in the U.S., "Queen Elizabeth," starring Sarah Bernhardt, premieres. |
| 13 | 1787 | 221st | Congress enacts the Northwest Ordinance to create a policy for settling the Northwest Territory, as proposed by Thomas Jefferson 3 years prior. |
| 13 | 1837 | 171st | Queen Victoria, only eighteen years old, is the first British sovereign to move into London's Buckingham Palace. |
| 13 | 1862 | 146th | Union General Crittenden and his garrison are captured by Confederate General Forrest's cavalry, in "Forrest's First Raid." |
| 14 | 1877 | 131st | After two paycuts, Baltimore & Ohio Railroad workers walk off the job during "the Summer of Strikes." |
| 14 | 1892 | 116th | The violent Homestead Strikes in Pennsylvania make front page news in New York. |
| 15 | 1862 | 146th | The Confederate ironclad Arkansas fiercely attacks Farraguts fleet at Vicksburg, then steams away pursued only by the USS Essex |
| 16 | 1787 | 221st | The Constitutional Congress plans for a "lower" House, to be determined by state population (the future House of Representatives). |
| 16 | 1862 | 146th | David Glasgow Farragut becomes the first rear admiral in the U.S. Navy. |
| 17 | 1862 | 146th | Lincoln approves the Confiscation Act, freeing all fugitive Confederate slaves forever, in a great step toward emancipation. |
| 17 | 1867 | 141st | The Harvard School of Dental Medicine, the first dental school in the U.S., is established. |
| 17 | 1997 | 11st | The Woolworth Corporation closes its last 400 five-and-dime stores after 117 years as a chain. |
| 18 | 1872 | 136th | Great Britain introduces the concept of voting by secret ballot. |
| 18 | 1927 | 81st | Ty Cobb makes his 4,000th career hit. |
| 18 | 1947 | 61st | Truman signs Presidential Succession Act to make the Speaker of the House and the Senate president next in line after the Vice President. |
| 18 | 1962 | 46th | Congress votes to preserve the Manhattan birthplace of Theodore Roosevelt, as well as Sagamore Hill, his Long Island, NY, estate. |
| 19 | 1817 | 191st | Mary Ann Ball Bickerdyke, tireless Civil War nurse, botanic physician, hospital administrator and pension attorney, is born. |
| 19 | 1972 | 36th | Paris peace talks resume between the U.S. and North Vietnam, with Henry Kissinger and Le Duc Tho. |
| 20 | 1917 | 91st | The U.S. draft lottery goes into operation in World War I. |
| 20 | 1937 | 71st | Guglielmo Marconi, Italian physicist and inventor of the wireless telegraph, dies. |
| 21 | 1862 | 146th | Former president Martin Van Buren, called "Blue Whiskey Van" for his heavy drinking, slips into a coma. |
| 21 | 1877 | 131st | The Baltimore railroad Strike turns bloody after workers' wages were cut for the third time in three years. |
| 22 | 1862 | 146th | Pres. Lincoln tells his cabinet and advisors that he'll soon make an emancipation proclamation to free all slaves. |
| 22 | 1937 | 71st | Pres. Franklin Roosevelt's "court-packing" strategy to protect the NLRA is rejected by the U.S. Senate. |
| 22 | 1987 | 21st | Soviet leader Gorbachev agrees to a ban on intermediate-range nuclear missiles. |
| 23 | 1862 | 146th | Lincoln appoints Gen. Henry Halleck, "Old Brains," general-in-chief of the Union Army. |
| 23 | 1877 | 131st | Mass meeting of workers supporting the rail strikers becomes violent when they turn their rage on the Chinese, who work for lower wages. |
| 23 | 1937 | 71st | Orson Welles's first radio drama, based on Hugo's "Les Miserables," is broadcast on his new "Mercury Theater" program. |
| 24 | 1567 | 441st | Mary Stuart, Queen of Scots, is forced to abdicate the throne in favor of her one-year-old son, who will become King James VI. |
| 24 | 1802 | 206th | Alexandre Dumas the Elder, author of "The Three Musketeers," "The Count of Monte Cristo," and many other bestsellers, is born. |
| 24 | 1847 | 161st | Brigham Young, early Mormon leader, arrives with his followers at the Great Salt Lake in Utah, after 17 months of travel. |
| 24 | 1862 | 146th | Martin van Buren, 8th President of the U.S., dies. |
| 25 | 1832 | 176th | The first railroad accident in U.S. history occurs on the Granite Railway, near Quincy, MA. |
| 25 | 1862 | 146th | Union Gen. Beroth Eggleston is captured by Confederates, but will survive to become a prominent Mississippi Carpetbagger. |
| 25 | 1897 | 111st | Jack London sails for the Klondike Gold Rush, where he will write "The Call of the Wild." |
| 26 | 1847 | 161st | The Republic of Liberia becomes the first African colony to declare its independence. |
| 26 | 1947 | 61st | Pres. Truman signs the National Security Act, creating the Department of Defense, the CIA, and the Joint Chiefs of Staff. |
| 27 | 1967 | 41st | In the wake of the Watts riots and other urban rioting, Pres. Johnson appoints the Kerner Commission to study the cause of violence. |
| 28 | 1932 | 76th | "Bonus Marchers" (WWI veterans) are evicted from Washington DC by Gen. MacArthur, obeying Pres. Hoover, though 2 veterans are killed. |
| 29 | 1862 | 146th | Belle Boyd, Confederate spy who reported to Stonewall Jackson, is captured and jailed in Old Capitol Prison |
| 29 | 1932 | 76th | When Hoover orders MacArthur and Eisenhower to use tanks and tear gas, the final veterans from the "Bonus Army" flee Washington. |
| 30 | 1942 | 66th | Pres. Franklin Roosevelt signs a bill creating the WAVES or "Women Accepted for Emergency Service" in the Navy. |
| 30 | 1952 | 56th | "The Guiding Light," a popular radio show, premieres on television as a "soap opera." |
| 31 | 1777 | 231st | The Marquis de Lafayette, a 19-year-old French nobleman, becomes a major-general in the Continental Army, but without pay. |
| 31 | 1792 | 216th | The first federal government building's cornerstone is laid at the U.S. Mint in Philadelphia. |
| 31 | 1932 | 76th | Apache scout Charles Martine, who helped obtain Geronimo's surrender, dies on a reservation, as Gen. Miles never kept his promises. |