Else Bostelmann

From article, "A Half Mile Down," these illustrations began as sketches by Bostlemann who accompanied Dr. William Beebe and Otis Barton on their oceanographic expeditions to Bermuda in their bathysphere invention (pictured in lot 14). This 1934 expedition, that set a new depth record of 3,028 feet, was financed and sponsored by members of National Geographic.