Excerpt from Suggested Symbols for Plans, Maps, and Charts: Revised April 1937 The need for a greater degree of standardization of symbols used on maps and charts to show research, statistical and survey data} as well as planning recommendations, is widely recognized. A common language based on a common alphabet of symbols is obviously essen tial if the audience, whether general or Specialized, is to interpret correctly maps and charts prepared by planning and research agencies. For example, it is confusing to find the same green tint used on one map to represent recreation areas, also used on another to indicate a town site. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.