Joxe Mallea-Olaetxe studies history in trees, recording the engravings left by Basque sheepherders in aspen groves throughout the mountains of the American West. Over more than a century, starting in the mid-1800s, thousands of Basque men left their villages in the Pyrenees mountains of northern Spain and southern France, immigrating to America in search of better lives. Alone and far from their families, homesick herders carved their names, thoughts, and fantasies on the trees. Some of the arborglyphs are elaborate, evoking the deep yearnings of lonesome men in a strange new land. Some are crudely pornographic.