American non-fiction outdoors writers

president of the United States from 1929 to 1933 (1874–1964)

American-British author (born 1951)

British/American author, artist and naturalist, and one of the founders of the scouting movement (1860–1946)

American writer and journalist

mountaineer

American writer (1916–2006)

American environmentalist (1912-2000)

American writer

American lecturer, photographer and journalist (1858–1923)

American writer

American writer (1862-1931)

American environmentalist

American journalist, writer and adventurer

American rock climber and author