1859-1942 1938- 1954- 20thcentury biography descriptionandtravel environmentalism environmentalprotectioninart george journeys kenya legislators naturalareas natureconservation naturephotography photographers pictorialworks pictorialworksbeard shiras soildegradation stephen travelbeard travelkirkpatrick unitedstates vocationalguidance wildlifeconservationists wildlifedepredation wildlifephotography