George Winslow Plummer (August 26, 1876 – January 23, 1944) was Imperator and Supreme Magus of the Societas Rosicruciana in America (S. R. I. A.) from 1909 to 1944. Under his auspices the organization was given its contemporary structure. The title was passed on to him by Frater Sylvester Clark Gould (March 1, 1840 - July 19, 1909) in New York,...