>According to the fictional history created for the film, Gustave Eiffel met Jules Verne and Thomas Edison at his Tower apartment to start a secret society of optimists. Plus Ultra was founded at the 1889 World’s Fair in Paris, France. The organization’s purpose is to create, moderate and expand upon new scientific advancements for humanity. Key members of Plus Ultra included Ray Bradbury, Amelia Earhart, Mark Twain, Nikola Tesla, and other key scientific figures. Walt Disney was also a member of Plus Ultra.
https://www.groundzeromedia.org/7-5-18-plus-ultra-time-and-transcendence/