A stunning selection of pictures gives a fascinating insight into US preparations for World War Two, when the country responded to the Pearl Harbor bombing.
More than 2,400 American personnel were killed at the base during a Japanese air strike in December 1941, and the atrocity sparked a huge increase in arms production.
The images, mostly taken at the Corpus Christi naval base in Texas, show how volunteers did their bit to help the US war effort.
In the four years after Pearl Harbor the US manufactured 102,410 tanks, 2,679,840 machine guns and 105,000 mortar rounds.
They also produced 99,000 fighter planes, 97,000 bombers and 6,771 large ships, more than any other nation involved in the war effort.
By the time the war was over, it is estimated, more than 35,000 airmen had gained their 'wings' from the base, and the images have been colorized nearly 75 years after they were created.