Emigrants from the German Empire

John Decker (b. Leopold von der Decken, November 8, 1895 – June 8, 1947) was a painter, set designer and caricaturist in Hollywood during the 1930s and 1940s.

Georg Carl Tänzler, also known as Count Carl von Cosel (February 8, 1877 – July 3, 1952), was a German-born radiology technologist at the Marine-Hospital Service in Key West, Florida. He developed an obsession with a young Cuban-American tuberculosis patient, Elena "Helen" Milagro de Hoyos (July 31, 1909 – October 25, 1931), that carried on well after her death. In 1933, almost two years after her death, Tanzler removed Hoyos' body from its tomb, and lived with the corpse at his home for seven years until its discovery by Hoyos' relatives and authorities in 1940.

Karl Mellinger (26 November 1858, in Mainz – 21 May 1917, in Basel) was a German-Swiss ophthalmologist.
Mellinger studied medicine at the universities of Zürich and Basel until 1883, and afterwards worked as an assistant to ophthalmologists Johann Friedrich Horner in Zürich and Karl Stellwag von Carion at the University of Vienna. In 1889 he obtained his habilitation at Basel and was named head of the outpatient clinic. In 1896 he became an associate professor and successor to Heinrich Schiess-Gemuseus as head of the university eye clinic. Among his students and assistants at Basel were Alfred Vogt and August Siegrist. He is credited with introducing a specialized ring magnet (inner pole eye magnet) into ophthalmology.