The "Dictionary of American Biography" is a comprehensive reference work that provides biographical information on notable figures in American history. It includes entries on politicians, artists, scientists, and other influential individuals, detailing their lives, achievements, and contributions to society. The dictionary serves as a valuable resource for researchers, students, and anyone interested in American history. First published in 1928, the dictionary has undergone several updates and expansions, reflecting the evolving understanding of American history. It is often used in conjunction with other historical resources, such as the American Historical Association and various biographical dictionaries, to provide a well-rounded view of significant American figures.