[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 9
O D O O O SCALE 1 IN. — 1 FPOT STAIR BUILDING. PLATE L Fig. I. To describe a7i elliptical cu7ve with a thread or cordand pencil. Draw the major and minor axis A B and C D, Fig. i. Tofind the points to place pins : From the point D as a centre,with S B or S A as a radius, describe arcs, cutting the…
Stair building
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