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1327
Cave, Carl Hanson measuring height of ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Survey, man with level rod in cave, showing height of cave Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Carl Hanson showing height of ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Cave, Carl Hanson measuring height of ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Survey, man with level rod in cave, showing height of cave Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Scale showing height of cave ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Survey, man with level rod in cave, showing height of cave Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Survey, man with level rod in cave Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Scale showing height of cave ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Cave, Carl Hanson measuring height of ceiling, Cox Case Mammoth Cave National Park; National Park Service
View on map 
1939-03-30
Construction, surveying on the new Echo River Road, 1939 Mammoth Cave National Park; National Park Service
View on map 
1939-05-25
Survey party going into new discovery, 6 NSS members in cave, 1939 Mammoth Cave National Park; National Park Service
View on map 
1939-07
Cave, New Discovery, survey party on Fossil Avenue Mammoth Cave National Park; National Park Service
View on map 
1939-09
Cave, column with measuring stick against it Mammoth Cave National Park; National Park Service
View on map 
1940-07
Historic American Buildings Survey Catalog of the Measured Drawings and Photographs of the Survey in the Library of Congress, March 1, 1941 Clemson University Libraries Call number: i29.2: b86/3/941.
View on map 
1941
Construction, men surveying large vacant field for parking lot, taken from a distance Mammoth Cave National Park; National Park Service
View on map 
1941-06
Land map of James River utility area Blue Ridge Parkway Virginia, Section 1H.
View on map 
1941-12-13
Land map of James River utility area Blue Ridge Parkway Land Map - James River Maint Area, Sta 142+50, Virginia, Section 1H.
View on map 
1941-12-13
Cave, survey party at work during opening of end of Fossil Avenue, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
Geological and Geophysical Survey of Fluorspar Areas in Hardin County Illinois Winthrop University
View on map 
1944
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Page 17 of at least 68
About 1,300 Items

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