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<p>This item contains mostly various surveying data taken during the International Boundary Commission for the United States and Mexican boundary, including the names of tracts, data for description of collecting stations, altitudes, coordinates and miles, map, and sections of Mexican Boundary Line. Notes include data for stations and "monuments" (survey markers). Very few notes on natural history are included. Mearns notes that water birds were collected at Laguna Del Alamo (it seems he and his colleagues were traveling from the vicinity of Nariz Mountains (Sierra de la Nariz) to Milquata Valley and to the Pacific Ocean. Also included is "subdivisions of the Mexican Boundary Region based on variations in its mammals". Dates generally range from 1892-1894
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<br>Subjects: United States-Mexican International Boundary Survey, 1891-1894; Ornithology; Mammalogy; United States; Mexico; Arizona; Nariz, Sierra de la</div>
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Mearns, Edgar Alexander 1856-1916</div>
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