Voici une traduction fidèle et littéraire de ce passage, dans un registre soutenu adapté à une présentation éditoriale ou bibliophilique :

The towering figure of Jules Verne—whose stories inspired countless scientific and literary vocations and helped shape the Western imagination throughout the twentieth century—might well have eclipsed the more modest stature of his publisher, Hetzel, had the latter not exerted an equally profound influence. As Verne’s close friend and collaborator, Hetzel revolutionized the world of publishing and kindled a lasting appetite for adventure and reading across generations.

 

Even today, the editions of Jules Verne bound in the splendid covers conceived by Hetzel remain among the most sought-after works for collectors of antiquarian books.
 
The so-called "Hetzel bindings"—the result of a singular collaboration between a publisher and his exclusive author—mark a major turning point in the history of publishing, and more specifically, in our relationship to the book itself.
 
Since the Revolution, advances in universal education had dramatically increased the number of readers while lowering their average age. Yet few novels were intended for a young audience—save for moralising and propagandist “literary tisanes,” or sanitized, patriotic retellings of ancient tales and myths.

          
 

Voici la traduction intégrale et littéraire du passage, dans un anglais soigné et fidèle, parfaitement adapté à un contexte bibliophilique ou éditorial :

A committed humanist and progressive, Pierre-Jules Hetzel reimagined the book, the writer, the reader—and even the collector.
 
To captivate a young audience eager for literary discovery, Hetzel devised a magnificent edition that rivalled the most luxurious volumes: quarto format, gilt edges, stamped covers, refined typography, full-page colour illustrations, and maps. He commissioned bindings from renowned craftsmen such as Jean Engel and Antoine Lenègre, thus creating a series that collectors would later describe using poetic metonymies that became part of bibliophilic lore:
“lighthouse spine,” “elephant cover,” “rose bouquet,” “steamer,” “astrolabe,” “trial bindings,” “personalised bindings,” “Greek-style back cover”…
 
Hetzel would go on to publish over two thousand different editions of Jules Verne’s Voyages extraordinaires. Sadly, the boundless enthusiasm of young readers proved too much for the delicate construction of these heavy volumes, and most copies suffered from extensive handling and repeated readings.
 
Today, the few surviving examples in fine condition are keenly sought after by collectors, while countless worn copies, now worthless, still linger in attics.
 
These editions owed their immense success not only to the elegance of their bindings, but above all to Jules Verne’s astonishing imagination—brought to life by the finest illustrators of his day.