Walker, William, b. 1821 · New York : C. Scribner · leaf 59
Fig. 19. On Sketcliing, 31 readily found by drawing diagonal lines from corner tocorner of the paper, as in Fig. 19. 50. If it should happen that there are no important linesnear the centre of the drawing, as in the woodcut (Fig. 20),then the principal horizontal lines should first be drawn,and the…
Drawing -- Study and teaching
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