Keywords: Douglas, Marjory Stoneman ; Abbey, Edward ; Muir, John ; Thoreau, Henry David ; Leopold, Aldo ; Human Geography ; Social and Cultural Geography ; Environmental Studies ; Environmental Social Sciences ; Cultural Studies ; Human geography ; Cultural geography ; Human ecology—Study and teaching ; Environmental sciences—Social aspects ; Culture—Study and teaching ; Renaturierung ; Geschichte ; Literatur ; Umwelt ; Beziehung ; USA ; USA ; Umwelt ; Literatur ; Renaturierung ; Beziehung ; Geschichte ; Thoreau, Henry David 1817-1862 ; Muir, John 1838-1914 ; Leopold, Aldo 1886-1948 ; Douglas, Marjory Stoneman 1890-1998 ; Abbey, Edward 1927-1989