Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 755
equired position; but the sug-gestion is obvious that by the salted-paper or blue-print process, nude figurescan be used instead of manikins, and photographs promptly secured withoutfatigue to the model and in positions of motion impossible in sketching. As afurther illustration of this process, a… … Fig. 1823.
Mechanical drawing
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