Massachusetts, officially called a "Commonwealth," was admitted to the Union on February 6, 1788. It is the seventh smallest state. Boston is the state capital and the oldest city.

This guide compiles links to digital materials related to Massachusetts 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 Massachusetts and a bibliography containing selected works for both general and younger readers.