The back cover includes a brief introduction in Spanish:

"The so-called 'Epic of the West' in the brief history of the United States, led to the emergence of certain persons characterised by their violent exploits, typical of the era and environment in which they live. The first popular literature, mainly films and also comics in recent decades, praised the deeds of those persons and turned them into mythical heroes when, in most cases, they were nothing more than murderers forced by circumstances or survivors, due to their ruggedness, into the forefront of most ruthless colonization that history knows. This book offers biographical data of some of these characters, tested according to the most strict and accurate documentation, collected and transformed into a comic script by Josep Toutain. Another great lover of the subject, the Valencian cartoonist Jose Ortiz, has used the same sources as support for his extraordinary skill as a graphic storyteller."