McCoy graduated from the University of Missouri in 1944 with a master's degree in geology. McCoy pioneered the techniques and studies of oil field water sampling, oil-producing sands, water encroachment, subsurface mapping, sample logging and subsurface distribution of rock. After working for Empire Gas and Fuel Company from 1917-1920 and later a consulting geologist, McCoy joined Marland Oil Company in 1924 as vice-president of land and geology until 1929. He later worked for Deep Rock Oil Well Corporation as a manager until his death.
From the description of Alexander Watts McCoy papers, 1913-1946. (University of Wyoming, American Heritage Center). WorldCat record id: 46837375