Project Mastodon: A Short Science Fiction Novel

“Project Mastodon” is a short science fiction novel written in 1955 for the popular science fiction magazine Galaxy. This is an interesting variation on the standard time-machine theme. No loops encountered. The short story is tersely written and the end, when technicalities clear, abrupt. This makes it an early example of hard SF with a time machine, worth a read. It is a pleasure to publish this new, high quality, and affordable edition of this timeless story.