I’ve posted an improved version of a NM 1864 map drawn by an officer in Carleton’s California Volunteers. Captain Allen Anderson, the cartographer, used more than a dozen earlier maps to draw his detailed map of the Southwest. An 1859 West Point grad and nephew of Col. Robert Anderson of Fort Sumter fame, Allen L. Anderson “was Captain in the 5th United States Regular Infantry before being commissioned Colonel and commander of the 8th California Volunteer Infantry regiment. He accompanied the California Column to New Mexico Territory and served there 1861-’62. He was brevetted Brigadier General, US Volunteers on March 13, 1865 for “faithful and meritorious services.” He resigned his Army commission in 1867 and became a civil engineer. He died in 1910, age 73.