Hardcover, 127 pages
French language
Published March 8, 1942 by Casterman.
This "Young Readers" edition in small format adds to the 62-page original (a) a 7-page introduction to the main characters in the story, and (b) a 23-page section on "The real-life inspiration behind Tintin's adventures," by Stuart Tett with the collaboration of Studio Moulinsart.