Graphic representation of the periodic table of chemical elements designed as a series table with Group 0 positioned in the middle of the table and the representative, rare earth, and transitional elements presented in sequence from left to right. This table was originated by Curt Schmidt in 1911 and classified by chemist Edward G. Mazurs as Subtype IIIC3-5a in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). This table appears as Figure 80 on page 145 of Mazurs' 1957 publication.
Mazurs, Edward G., and Curt Schmidt. “Series Table Designed by Curt Schmidt (1911).” Glass, circa 1911–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/7h149q35x.