File:Figure 44. Architectural Construction by Charles Wilson Killam, 1937.png

Summary
Figure 44 of a tower with openings surmounted by an octagonal spire. Architectural Construction Part Two: Design of Masonry and Foundations by Charles Wilson Killam. From online publication of his textbook: https://babel.hathitrust.org/cgi/pt?id=osu.32435069941243&view=1up&seq=45 First published in 1937, no copyright notice.