Frederick S. Dellenbaugh was an American explorer, who took part in several notable expeditions including Major Powell’s Second Expedition into the Grand Canyon. He became one of the founding membe...ver maisFrederick S. Dellenbaugh was an American explorer, who took part in several notable expeditions including Major Powell’s Second Expedition into the Grand Canyon. He became one of the founding members of the international Explorers Club in 1904. He passed away in 1935 in New York City.ver menos