1865-1940 1866-1955 1873-1933 1874-1922 1893-1978 20thcentury adventurers arcticregions autobiography biography britishantarcticexpedition(1907-1909) childhoodandyouthpeary children cook descriptionandtravel discoveryandexploration ernesthenry explorers familypeary familyrelationships frederickalbert henson history k2(mountain) luigiamedeodi marieahnighito matthewalexander modern mountaineeringexpeditions pakistan peary polarregions savoia shackleton unitedstates