Top and perspective views of a graphic representation of the periodic table of chemical elements in the style of a helix wound on one cylinder with interrupted short and medium periods. This type of table was originated by George A. Scherer in 1949 and classified by chemist Edward G. Mazurs as Type IIIA3-3 in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). A version of this illustration appears as Figure 73 on page 140 of Mazurs' 1957 publication.
Mazurs, Edward G., and George A. Scherer. “Periodic Table in Style of Helix Wound on One Cylinder with Interrupted Short and Medium Periods.” Glass, circa 1949–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/5138jf51k.