Carlsbad Caverns
National Park. New Mexico
(1935) 28 p., 1 map. 10 fot. b/n., 233x150 mm.
Ed. United States. Government Printing Office. Washington
Isabelle F. STORY
Carlsbad Caverns
National Park. New Mexico
(1951) 16 p., 1 map. 8 fot. b/n., 228x146 mm.
Ed. United States. Government Printing Office. Washington
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