The Legion of Time

The Legion of Time is a novella by the American writer Jack Williamson. It was originally serialized in Astounding Science-Fiction from May to July 1938, and was subsequently reissued by Fantasy Press (along with another novella, in a 1952 edition of 4,604 copies. Despite the title Legion of Time, the stories do not in fact feature an organization with such a name. The title story was originally announced as "The Legion of Probability".