About Charles Ammi Cutter
Source: Wikipedia
Charles Ammi Cutter (March 14, 1837 – September 6, 1903) was an American librarian. In the 1850s and 1860s he assisted with the re-cataloging of the Harvard College library, producing America's first public card catalog. The card system proved more flexible for librarians and far more useful to patrons than the old method of entering titles in chronological order in large books. In 1868 he joined the Boston Athenaeum, making its card catalog an international model.