Hockensmith, Charles D. The Millstone Industry: A Summary of Research on Quarries and Producers in the United States, Europe and Elsewhere. Jefferson, North Carolina: McFarland, 2009.

Hockensmith, Charles D. The Millstone Industry: A Summary of Research on Quarries and Producers in the United States, Europe and Elsewhere. Jefferson, North Carolina: McFarland, 2009.