Analysis of information sources in references of the Wikipedia article "White Sands Missile Range" in English language version.
GPS Coordinates for obelisk (exact GZ) = N33.40.636 W106.28.525
Special Orders No. 143, Headquarters, Army Ground Forces, dated 6 July 1946, [established] the Antiaircraft and Guided Missile Center [from] the remnants of the Antiaircraft Artillery School, the Antiaircraft Replacement Training Center, Army Ground Forces Board No. 4,13 1st AAA Guided Missile Battalion, the 1852nd Area Service Unit, and remaining antiaircraft units, including three automatic weapons battalions and one gun battalion placed in the Army General Reserve.
three officers and fifty-five enlisted men...worked closely with the German rocket scientists who were located in a six-acre ordnance area on the north side of the Fort Bliss cantonment. [The military unit went to WSPG] to provide the manpower to build the [V-2] missiles and erect them on test stands.
#1 Viking St White Sands Missile Range, NM 88002
Iconorama shows almost instantly the positions of aircraft thousands of miles away… Traces made by the planes being tracked are scribed on a coated slide by a moving stylus. … The slide plot measures only one inch square, yet overall error of the projected display is said to be about one part in 1,000. … Iconorama units already have been installed and operated at the Pacific Missile Range, Point Mugu Calififornia; the White Sands Missile Range in New Mexico; the Atlantic Missile Range at Cape Canaveral, Florida, and the Naval Research Laboratory
Executive Order No. 9029
Launch Complex 38...Site preparation for the TTR [Target Tracking Radar] began in July 1959.... Site preparation for the Discrimination Radar was started in January 1961.
[1st ramjet GAPA] "was launched 14 November 1947 and the initial liquid-fuel variety 12 March 1948.8... The last of the GAPAs, number 114, was launched 15 August 1950, and the project officially terminated at Holloman the following month.11
GPS Coordinates for obelisk (exact GZ) = N33.40.636 W106.28.525
late 1950…Fort White Sands…early in 1951