1817-1862 1834-1902 1842-1901 1909-1993 19thcentury americanliterature cartography cartographypowell cartographystegner cartographythoreau clarence environmentalprotectioninliterature henrydavid history historyandcriticism johnwesley knowledge landscapesinliterature natureinliterature place(philosophy)inliterature surveying unitedstates wallace wildernessareasinliterature