Three classic sci-fi tales by John W. Campbell. The text is printed using a 10 point serif style font, presented in a two column format. An example of the page layout and formatting can be seen by visiting: https://www.thegrove.in.nf/scificlassics.html Who Goes There?: "Who Goes There?" is the original sci-fi thriller that formed the basis of John Carpenter's film "The Thing". This classic story tells of an Antarctic research base that discovers and thaws the ancient, frozen body of a crash-landed alien—with terrifying results! The Mightiest Machine: The burning was slower now, for each pound of nitrogen had carried down with it three pounds of oxygen, and the atmosphere was almost nothing but nitrogen and carbon dioxide. There was no water in the air, for the nitric oxide absorbed it, drank it greedily. The carbon dioxide was formed from every scrap of organic matter that had been on the planet. There were no fish in the sea, no plant nor any animal on the land, and no bird in the air. The humus in the soil was burned; the very rocks were being eaten by the corrosive, oily stuff. The nights were cold now... The Brain-Stealers Of Mars: Penton and Blake find Mars an unexpectedly pleasant place to be—until they run afoul of the thushol, which can imitate anything!