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In 1875, a team of cartographers, geologists, and scientists under the direction of Ferdinand V. Hayden entered the Four Corners area for what they thought would be a calm summer's work completing a previous survey. Their accomplishments would go down in history as one of the great American surveying expeditions of the nineteenth century. By skillfully weaving the surveyors' diary entries, field notes, and correspondence with newspaper accounts, historians Robert S. McPherson and Susan Rhoades Neel bring the Hayden Survey to life. Mapping the Four Corners provides an...