So I spent some time surfing their data base and I've seen many of those images before and even have copies. The copies I have principally all came from NARA (National Archives). I would bet that the vast majority, aside from only a handful of images from a Navy stand point, all came from NARA. Many images got tossed around like the village bicycle and reside in multiple holdings. From what I seen of the Naval images, most all should be Public Domain (FOIA stuff). Obviously, your image is cropped. Each image in the Navy holdings are provided on an oversized card, such as the example below. You could contact the webmaster and ask for the serial number of the image. This number is in multiple spots on the card, very top and in the legend. In many cases there are many more related images that could accompany this one your after. I have noticed that often images are cherry picked then get floated around over and over again. The serial number is the Key, if you have that, obtaining the image is very easy.
Edited by dustin, 22 June 2018 - 08:26 AM.