Joseph Lewis French 
Masterpieces of Mystery: Riddle Stories [EPUB ebook] 

Edited by Joseph Lewis French, this collection of 9 riddle stories includes ‚The Mysterious Card‘ and its sequel by Cleveland Moffett, ‚The Oblong Box‘ by Poe, ‚A Terribly Strange Bed‘ by Wilkie Collins, ‚The Lost Room‘ by Fitz-James O’Brien and others selected as masterful examples of the genre by the editor. He says in the forward:

‚A distinguished American writer of fiction said to me lately: ‚Did you ever think of the vital American way we live? We are always going after mental gymnastics.‘ Now the mystery story is mental gymnastics. … The stories of this collection cover a wide range and are the choice of reading in several literatures.‘