![[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
Potomac Aqueduct, hydrographic survey of the Potomac River near George...
"Survey made in the fall of 1832." Relief shown by hachures. Depths shown by contours and soundings. From the papers of the Virginia-District of Columbia Boundary Commission. Available also through the Library ... More
Bathymetry of Bonnie Doone Lake, Kornbow Lake, Mintz Pond, and Glenvil...
Depth shown by contours. Bibliography. Includes text, 5 tables, location map, graph, and ill. Available also through the Library of Congress Web site as a raster image.
Spratly Islands in the South China Sea
"1401212-15 State (INR)." Relief shown by shading. Depths shown by gradient tints. "Names and boundary representation are not necessarily authoritative." Available also through the Library of Congress Web site ... More
Japan : Nipon, Kiusiu and Sikok, and a part of the coast of Korea /
Relief shown by hachures and spot heights. Depths shown by contours and soundings. "Published according to Act of Parliament at the Hydrographic Office of the Admiralty Octr. 12th. 1855." "Positions of coast do... More
Hydrographic reconnaissance of James River, Virginia, from entrance to...
General nautical chart. Depths shown by soundings and contours. At head of title: A.D. Bache Supt. Copy 1 is hand col. in blue watercolor to show shallow waters, in red and black inks to show buoys, in pink ink... More
East China Sea, bathymetry. - Public domain map
Picryl description: Public domain image of a 19th-century fashion, China or Chinese-inspired design, free to use, no copyright restrictions.
Hydrographic map of the Potomac River from Aqueduct Bridge, Georgetown...
Relief shown by hachures. Depths shown by soundings. Originally printed on 2 sheets. Includes notes. LC copy mounted on cloth backing and extensively annotated in red ink to show estuarine contours. Available a... More
Potomac River at Alexandria, Virginia : surveyed in compliance with th...
Depths shown by contours and soundings. "House Doc. 1253; 60th Cong., 2d Sess." Oriented with north toward the lower left. Available also through the Library of Congress Web site as a raster image. DCP 2 copies... More