Barton on ladder for dive, near Catalina Island, 1949

Otis Barton on ladder for shallow water dives off crane barge for benthoscope/benthograph operation, Emerald Bay, Santa Catalina Island, Channel Islands, California, USA, 1949 October. Three men assist from the crane barge. The men on the barge are Dr. Maurice Nelles, William "Bill" Laner, and an unidentified man. Two unidentified men are in a skiff in the background. The Velero IV is in the background.