The Douglas Dolphin was used by the civil, military and USCG operators, and this gallery is a start to bring decent reference images of the Dolphin to you. Therefore, I am aware that it features some of each version but when I have accumulated enough images, I will split them into their separate entities.
The images with a dark gray background come from Tim Kalina and feature the Vanderbilt civil 'flying yacht' in all it's luxury. It is believed that the person in the pictures is the pilot. If anyone has any more details of this particular craft, especially the interior, please send them in.
Contributions © WT Larkins, Tim Kalina, John Hopton, Mark Aldridge, Aerofiles.