During 1958–1960 TMA flights and a traverse out of Byrd Station visited and mapped the Executive Committee Range. TMA were flown in western Marie Byrd Land in 1964 and 1965. Following these efforts the United States Geological Survey (USGS) mounted land surveys to establish a series of reference points and benchmarks throughout much of Marie Byrd Land during 1966–1968.[14][full citation needed]