The Ulysses S. Grant Presidential Collection contains copies of every known letter Grant wrote and copies of every letter written to him. This is the most complete collection of Grant correspondence in the world (some 15,000 linear feet), consisting of copies of originals at the Library of Congress, National Archives, other public repositories and private collections around the world. The Libraries also have three manuscript boxes of original Grant correspondence, particularly Grant Family material before and after Grant's death in 1885. The Collection also includes photographs, political cartoons, sheet music, art, and artifacts from and relating to Grant's life, military service, and presidency.
The Collection is housed by Mississippi State University Libraries in the Congressional and Political Research Center, which also houses papers from several contemporary state and national politicians. Mississippi State University Libraries contributes an assistant editor, an associate editor, an administrative assistant, and several student assistants to the Grant Presidential Library. The Libraries have also digitized a significant portion of the Presidential Collection and made it available online, free of charge.