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![[Heezen-Tharp collection]. Historic map, Library of Congress](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTAvMDUvaGVlemVuLXRoYXJwLWNvbGxlY3Rpb24tMTQxYTMyLTEwMjQuanBn/40/36/webp "[Heezen-Tharp collection]. Historic map, Library of Congress")
[Heezen-Tharp collection]. Historic map, Library of Congress
Consists of a wide variety of materials relating to an effort to map ocean floors carried out by the Lamont-Doherty Earth Science Observatory of Columbia University. This work was accomplished by geologist Bruc... More
![[Manuscript painting of Heezen-Tharp "World ocean floor" map by Berann].](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTEvMjEvbWFudXNjcmlwdC1wYWludGluZy1vZi1oZWV6ZW4tdGhhcnAtd29ybGQtb2NlYW4tZmxvb3ItbWFwLWJ5LWJlcmFubi1iZmQ2OTEtMTAyNC5qcGc%3D/40/23/webp "[Manuscript painting of Heezen-Tharp \"World ocean floor\" map by Berann].")
[Manuscript painting of Heezen-Tharp "World ocean floor" map by Berann...
Relief shown by land form drawings, shading, and gradient tints. Depths shown by land form drawings, shading, gradient tints, and soundings. Also covers land areas of the world. Title supplied by cataloger. Han... More