1. “Library Catalogues”;Cutter,1876
2. “Irrepressible Reformer: A Biography of Melvil Dewey”;Wiegand,1996
3. There was some experimentation with catalogs in classified order, but these proved difficult for the public to use and often required alphabetical indexes to make them accessible (see Cutter, C. A., op cit., pp. 529–532). The rise of alphabetical or dictionary catalogs coincided with the introduction of the Dewey Decimal Classification, which created a classified order for the books on the shelves, supported by an alphabetical index to the classification for public access (see Dewey, Melvil. A Classification and Subject Index, For Cataloguing and Arranging the Books and Pamphlets of a Library, Amherst, Mass, 1876).
4. “Mrs. Durant's part in these concluding volumes has been so substantial that our names must be united on the title page.” Durant, Will and Durant, Ariel, The Age of Reason Begins (p. viii), New York, Simon and Schuster, 1961.