Logically pointing out that the American cowboy archetype didn’t spring up from nowhere, Sandler, author of Cowboys (1994) and other volumes in the superficial, if luxuriously illustrated, “Library of Congress Book” series, looks back over 400 years of cattle tending in North America. His coverage ranges from the livestock carried on Columbus’s second voyage to today’s herding-by-helicopter operations. Here, too, the generous array of dramatic early prints, paintings, and photos are more likely to capture readers’ imaginations than the generality-ridden text. But among his vague comments about the characters, values, and culture passed by Mexican vaqueros to later arrivals from the Eastern US, Sadler intersperses nods to the gauchos, llaneros, and other South American “cowmen,” plus the paniolos of Hawaii, and the renowned African-American cowboys. He also decries the role film and popular literature have played in suppressing the vaqueros’ place in the history of the American West. He tackles an uncommon topic, and will broaden the historical perspective of many young cowboy fans, but his glance at modern vaqueros seems to stop at this country’s borders. Young readers will get a far more detailed, vivid picture of vaquero life and work from the cowboy classics in his annotated bibliography. (Notes, glossary, index) (Nonfiction. 10-12)