Science Art: Water Features and Relief Features, from The preparation of illustrations for reports of the United States Geological survey, with brief descriptions of processes of reproduction, 1920

WaterFeaturesReliefFeatures
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An illustration illustrating illustration. This is how standardized maps are made. These are the standards.

From The preparation of illustrations for reports of the United States Geological survey, with brief descriptions of processes of reproduction, by John L. Ridgway, a meta-illustrator.