Thanks Paw, there seems to be no indicia stating the publisher's name and location on this book. Maybe that page is missing? It being a publication from Spain explains the lack of knowledge of a well-known Native Mexican tribe. Most of Mexico's population are Mestizos, or full-blooded, Native Mexicans. So, one would think they would know some obvious details about their indigenous tribes. The Spanish, on the other hand, glorified the conquest of their colonial empire, and their historians, on the whole, took little interest in paying attention to the details of the pre-conquest details of the indigenous tribes' lifestyles.
Link to the book:
Jefes Pieles Rojas Español