The book is considered to be the result of illegal photographic activities by Raymond and in particular his brother Roger Schall, but many of the reproduced photographs could not be made without permission of the German occupiers. Other credited photographers in this intriguing book are: Berson, Doisneau, France-Presse Libération, Jahan, Jarnoux, Joublin, Papillon, Parry, Pichonnier, Roughol, Seeberger, Vals and Viguier.