Cheney J. Schopieray, Curator of Manuscripts at the William L. Clements Library, discusses the breadth and depth of the D. N. Diedrich Collection of Manuscript Americana, 17th-20th Century. The Diedrich Collection includes over 1,100 original letters, documents, and other handwritten items, plus nearly 110 bound volumes and archival collections cover wide-ranging but deeply intertwined subject matter, such as American speech, education, government, Christianity, literature, music, philanthropy.