Colorado, nicknamed the Centennial State and the Highest State, became the 38th state on August 1, 1876. The state capital is Denver. This guide compiles links to digital materials related to Colorado such as books, government documents, manuscripts, maps, motion pictures, photographs, sheet music, and sound recordings that are available throughout the Library of Congress website. In addition, it provides links to external websites focusing on Colorado and a bibliography containing selected works for both general and younger readers.