Charles Coffin Jewett (August 12, 1816 – January 9, 1868) was an American librarian, in 1848 becoming the Librarian and Assistant Secretary of the Smithsonian Institution before being appointed Superintendent of the Boston Public Library in 1858. He was born in Lebanon, Maine.
Charles Coffin Jewett graduated from Salem Latin School in 1831. He enrolled at Dartmouth College in Rhode Island, but then shortly thereafter he transferred to Brown University where he studied a classical course load of Greek, Latin, logic mathematics, and moral philosophy; however, Jewett showed the greatest interest in languages.
Jewett had a tremendous love for books but he was lacking personal fortune so this made him an avid library user. Unfortunately for him, Jewett found the library at Brown rather lacking with its collection of only 6000 volumes. A popular thing at the time was for special societies on campus to curate their own libraries that held books on that societies special interests. In fact, the first library experience Jewett gained was at the Hope College in the library that was curated by the Miskosmian Society. Along with classmate William Lawton Brown, Jewett cataloged the collection of this library beginning what would be a long career of library cataloging.
His first cataloging experience took place as a Brown student while helping to catalog the library of the Philermenian Literary Society. In 1837, he entered Andover Theological Seminary, where he helped catalog the Andover Theological Seminary Library. In 1841, he became the librarian of Brown University. He extensively rearranged that library, and created a catalog in two parts; an alphabetical descriptive catalog of the items in the library, and an alphabetical Index of Subjects. After its completion in 1843, he embarked on a two-year campaign of book purchasing and study in Europe.
He became Librarian and Assistant Secretary of the Smithsonian Institution in 1848, and began the task of building the Smithsonian's library by soliciting catalogs from prominent libraries and publishing a survey of U.S. libraries. He also started mechanical duplication of individual catalog entries for the re-publication of book catalogs using the technique of stereotyping. He was elected a member of the American Antiquarian Society in 1851.