Graphic representation of the periodic table of chemical elements in the style of a spiral with varying sizes of revolutions. This table was originated by C.J. Monroe and W.D. Turner in 1926 and classified by chemist Edward G. Mazurs as Type IIIB4-1 in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). This table appears as Figure 86 on page 151 of Mazurs' 1957 publication.
Mazurs, Edward G. “Periodic Table in the Style of Spiral with Varying Sizes of Revolutions.” Glass, circa 1926–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/3b591929j.