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Subject
- History7
- National geographic5
- Geographers4
- National Geographic Society (U.S.)4
- Periodical editors4
- Canby, Thomas Y.3
- Field work3
- Geography3
- National geographic magazine3
- Science writers3
- American periodicals2
- American poetry2
- Books and reading2
- Gannett, Henry, 1846-19142
- Geography in literature2
- H. D. (Hilda Doolittle), 1886-19612
- History and criticism2
- Hughes, Langston, 1902-19672
- Huntington, Ellsworth, 1876-19472
- Modernism (Literature)2