Interspersing her narrative with verses from “Home on the Range,” “Sweet Betsy from Pike,” “The Old Chisholm Trail” and like cowboy chestnuts, Hopkinson retraces the early career of the greatest collector and recorder of American folk songs ever. Taking minor liberties with the historical record (and compensating with a detailed afterword), she follows him from rural Texan childhood to the halls of Harvard, and then back out onto the trail, where, with a notebook and a primitive “Ediphone,” he gathered verses and performances from anyone who would sing for him. In Schindler’s atmospheric illustrations a dapper young man mingles comfortably with brushy-mustached, Stetson-topped cowpokes—and sits in one scene with a colorfully clad fortuneteller—in settings that are mostly wide, outdoorsy spreads of western prairie. Capped with a fuller picture of the work of Lomax and his son Alan, as well as enticing source notes, this account can’t help but broaden the insight of little dogies everywhere into the histories and meaning of these enduringly popular songs. (Picture book/biography. 7-9)