"Geologic Map of the United States",

This detailed and colorful geologic map of the United States was compiled by Armin Lobeck and published by The Geographical Press at Columbia University. Legends at left and right identify numerous geological types on the time scale through a combination of color and texture, with some types having additional hand lettering. Base map data was provided by the USGS. First edition. Folds into self-wrappers with a smaller map and text on verso describing the map features.

The U.S. Army Corps of Engineers included Armin Lubeck in a section of “Notable Topographic Engineers” and named him “one of the acknowledged experts in the field of drawing block diagrams, once a useful and evocative way of representing terrain… As one geographer noted, 'Armin Lobeck was a gifted cartographic illustrator. He understood the land surface as well as anyone in his era, he knew how to draw and interpret maps, and he mastered the concise integration of maps, block diagrams, and written text.'" Click for more on his background. Lubeck is probably best known for his book, Things Maps Don’t Tell Us – An Adventure into Map Interpretation.

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Condition: B+

Issued folding with light toning, a faint dampstain along the bottom border, and a few short splits at the fold junctions with minor loss of image. A previous owner's name is printed in the top blank margin and on verso.