This week marks the 150th anniversary of the Civil War Battle of Gettysburg, July 1–3, 1863. The battle involved the largest number of casualties of the entire war and is often described as the war’s turning point: The Army of the Potomac under Maj. Gen. George Gordon Meade defeated the Army of Northern Virginia under Gen. Robert E. Lee, ending Lee’s invasion of the North. Brown University’s Charles Woodberry McLellan Collection of Lincolniana, housed in the John Hay Library, includes many items that provide important insight into the mindset of Lincoln and the state of the country at the time. Comprising more than 30,000 items by and about Abraham Lincoln and about the historical and political context of his life and career (chiefly the Civil War causes and aftermath), the collection includes broadsides, objects, graphics, and sheet music, as well as more than a thousand manuscripts that detail Lincoln’s conduct of the presidency. The collection includes two letters written by Lincoln in the days following the battle describing the recent events. Also housed at the Hay Library, in the Anne S.K. Brown Military Collection, are several prints depicting the battle. The Gettysburg Address, which Lincoln delivered in November 1863 at the battle site, is also well-represented within the library's collections, which include several copies of the address, including one in which the text is laid out in the shape of Lincoln’s profile, created in 1926 by O.O. Bowers. Many of the items in Brown’s Lincoln collection have been digitized and can be viewed at library.brown.edu/cds/lincoln.