Atlas of Mean Monthly Temperatures - 1964
Made by the US Army in 1964, these beautifully colored maps were used "...to work out a realistic system of clothing allowances to protect the soldier at any time of the year, in any part of the world." Peveril Meigs, Ph.D, was employed by the US government as a geographer, beginning in WW2. He an American geographer "notable for his studies of arid lands on several continents and in particular for his work on the native peoples and early missions of northern Baja California, Mexico." He also was "prominent among those listed as security risks by Senator Joseph McCarthy." Wikipedia
