Books by John J. Holtzapffel:
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Holtzapffel, John J. (John Jacob): A Manual of Wood Carving (revised edition; New York: C. Scribner's Sons, 1909), also by Charles Godfrey Leland (Gutenberg text and illustrated HTML)
Additional books by John J. Holtzapffel in the extended shelves:
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Holtzapffel, John J. (John Jacob): A manual of wood carving (C. Scribner's sons, 1891), also by Charles Godfrey Leland (page images at HathiTrust)- Holtzapffel, John J. (John Jacob): Wood carving (Whittaker, 1991), also by Charles Godfrey Leland (page images at HathiTrust)
Find more by John J. Holtzapffel at your library, or elsewhere.