Water Resources Division, U.S. Geological Survey 1984 Throughout time, maps have expressed our understanding of our world. Human affairs have been influenced strongly by the quality of maps available to us at the major turning points in our history. "Maps & Minds" traces the ebb and flow of a few central ideas in the mainstream of mapping. Our expanding knowledge of our cosmic neighborhood stems largely from a small number of simple but grand ideas, vigorously pursued. application/pdf 10.3133/70039241 en U.S. Geological Survey Maps & minds : mapping through the ages reports