South American 1:1,000,000 Atacama S.G. 19 / compiled and drawn by the American Geographical Society of New York ; photo-lithographed and printed by A. Hoen and Company, Baltimore

Provisional, rev. 1942Relief shown by gradient tints, contours and spot heights. Depths shown by isolines, gradient tints and soundings. Includes sheet coverage key, reliability diagram, synoptical index and abbreviation table. "Published under the patronage of John Greenough." "Copyright 1927 by the American Geographical Society of New York ; Reprinted with revisions, June, 1942."Color1:1,000,00