Published 1916, by Harper & Brothers, New York
The Naked Word's Preface:
Would Mark Twain have allowed The Mysterious Stranger to be published as it stands if he could have done anything to stop it? We reckon not. But he was dead six years by the time it came out so he didn't get a lot of say in the matter.
Between 1897 and 1908 Mark Twain worked on various versions of this story: "The Chronicle of Young Satan," "Schoolhouse Hill" and "No. 44, The Mysterious Stranger." The Mysterious Stranger, published in serial and book form in 1916, was something of a fusion and a condensation of Twain's unfinished stories, assembled without Twain's input or consent.
The 1916 edition by Harper & Brothers is presented here as published at that time, without further commentary.
Scholars interested in delving in depth into the story behind the publication of The Mysterious Stranger are referred to William M. Gibson's learned volume, Mark Twain's Mysterious Stranger Manuscripts, 1969, University of California Press, Library of Congress Catalog Card Number: 69-10576.