From Presidio to the Pecos River : surveying the United States-Mexico boundary along the Rio Grande 1852 and 1853 /

Examines the U.S.-Mexico Boundary Survey's scientific exploration of the Rio Grande from Presidio to the mouth of the Pecos River by two American parties, one led by civilian surveyor M. T. W. Chandler in 1852, and the second led by Lieutenant Nathaniel Michler in 1853.