 In 1877 Dewey moved to Boston, where he founded and became editor of "The Library Journal", which became an influential factor in the development of libraries in America, and in the reform of their administration.He was also one of the founders of the American Library Association, of which he was secretary from 1876 to 1891, and president in 1891 and 1893.In 1883 Dewey became librarian of Columbia College, and in the following year founded there the School of Library Economy, the first institution for the instruction of librarians ever organized.