Condition Continued: The bump to the front top corner caused only a tiny crease just below the tips of the first four pages. The bump at the front bottom corner created a little crease just above the tips of the bottom corners of the first 20 or 25 pages. The bump to the bottom corner of the rear cover created another small crease just above the bottom corners of a good number of pages. All of these little creases are far from the print. The pages are exceptionally clean. Scrolling through, I haven't seen any soiling at all. There are no markings. No attachments of any kind. And no one has written their name or anything else anywhere. As reference, there are good many illustrations, some full-page. They are all in excellent condition.

Boivin & Cie, Paris, 1927. Hardcover. Written by Paul D'Ivoi. In French. Part of the 'Collection Des Voyages Eccentriques' series. Early edition, 1927. 'Ouvrage Illustre De Cent Gravures Dans Le Texte De Vingt Grande Compositions Hors Texte.' Premiere Partie goes from page 1 to page 204.  Deuxieme Partie goes from page 205 to page 452. That is followed by two pages of a Table Des Matieres. Premiere Partie: L'ours De Siva, 12 chapters. Deuxieme Partie: La Route De L'avenir, also 12 chapters. 

'Paul d'Ivoi was by far the most commercially prosperous and influential successor of Jules Verne. He was the author of the 21 volume series, Les Voyages Excentriques (Eccentric Voyages) intended to compete with Verne's Les Voyages Extraordinaires (Extraordinary Voyages), which were for the most part first serialized in Le Journal des Voyages. 

D'Ivoi's novels were more adventure-oriented than Verne's, and were written in a faster paced, pulp/serial style. They were meant to entertain more than educate. They included a variety of futuristic machines such as incredible planes, submarines, rocketships, super-powered weapons, etc. Their heroes circumnavigated the globe, explored the bottom of the oceans, or conquered the atmosphere. They fought a dazzling variety of mad scientists, international conspiracies, and megalomaniacal tyrants. They unearthed evidence of ancient advanced civilizations. In short, they did everything pulp heroes of that time, like The Nyctalope, did.

Finally it is worth noting that, as was the case with Verne, through a series of cross-references, most of d'Ivoi's heroes share the same fictional universe, if they are not actually related to each other.'