The book is one of the first studies on a collection as a publishing, literary and graphic product. It presents the saga of the Maucci Brothers, their alliances and ruptures, their work in the promotion of books. It displays the ideology assumed by (Heriberto) Frias, who combines chronicle and fantasy to arouse patriotism among young readers. It reveals the role of (José Guadalupe) Posada as an illustrator of the collection and its relationship with the printing industry of the time.ʺ (Our translation) --Verso cover.