"H.M.S. CHALLENGER Entering St. Vincent, July 27, 1873" from the CHALLENGER
SKETCHBOOK by B. Shepard. This work was discovered by J. Welles Henderson, a
benefactor of the Philadelphia Maritime Museum. Accompanying text was
developed by Harris B. Stewart, oceanographer, marine science historian, and
then head of NOAA's Atlantic Oceanographic and Meteorological Laboratories.