91 items
On December 7, 1941, two hours after the Japanese attack on American military installations at Pearl Harbor, Hawaii, Japan declared war on the United States and Great Britain, marking America’s entry into World War II. The Japanese...
Physicists predict a nuclear arms race, 1945
This declaration of concern, written after the United States bombed Hiroshima and Nagasaki, offers insight into the Manhattan Project, an atomic development program led by the United States. The "Preliminary Statement of the...
Surrender of the British General Cornwallis to the Americans, October 19, 1781
These three documents—a map, a manuscript, and a print—tell the story of the surrender of British commander Charles Cornwallis to American General George Washington. In October 1781, the successful siege of Yorktown, Virginia, by...
Who Was John Brown?
"Did John Brown fail? John Brown began the war that ended American slavery and made this a free Republic." —Frederick Douglass Background The late 1840s and the 1850s were a turbulent and complex time in American history as the...
June 25, 1876: An Interpretation of an Historical Event
Essential Question How should events from the Indian Wars be commemorated by the federal government? Background The Battle of Little Bighorn was one in a series of conflicts that occurred during the American attempt to remove native...
The Conquest of Mexico: Past and Present Views
Introduction The conquest of Tenochtitlan by Hernán Cortez in 1519 is one of the most well-known examples of encounters between Europeans and Americans prior to 1600. Some primary sources that document the event still exist, though...
Events at Sand Creek, 1864
Historical Context When the Civil War broke out, John Milton Chivington, a missionary in Kansas, was offered a commission as a chaplain but refused it as he wanted to fight. As a result he was given a commission as a major in the 1st...
The Roosevelt Corollary to the Monroe Doctrine
Unit Objective This unit is part of Gilder Lehrman’s series of Common Core State Standards–based teaching resources. These units were written to enable students to understand, summarize, and analyze original texts of historical...
Sergeant Francis Fletcher of the 54th Massachusetts on equal pay for Black soldiers, 1864
Francis H. Fletcher, a 22-year-old clerk from Salem, Massachusetts, enlisted as a private in Company A of the 54th Massachusetts Infantry Regiment on February 13, 1863. One year after the regiment left Boston with great fanfare,...
A soldier’s reasons for enlisting, 1942
"Our country is the entire world and mankind our countrymen!!!" In April of 1942, Sidney Diamond, a chemical engineering student at City College in New York, enlisted in the United States Army against the wishes of his friends and...
Breaking from Great Britain, 1776
Sid Lapidus Collection: Liberty and the American Revolution By 1776, Thomas Paine had become the most influential writer defending the break from Great Britain. Born in England, Paine arrived in the colonies in 1774, at age 34. His...
American Music Goes to War
Entertainment is always a national asset. Invaluable in time of peace, it is indispensable in wartime. —Franklin D. Roosevelt, 1943 Background Music during World War II had an unprecedented impact on America, both on the home front...
The British evacuation of Boston, 1776
On March 25, 1776, only eight days after the British evacuation of Boston, the Continental Congress authorized a medal, “George Washington before Boston,” to commemorate the event. During the war, Congress commissioned eleven medals...
The US Government and Indigenous Peoples before the Trail of Tears, 1770-1839
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