Here is a link to a site which has old US government photos, easily searchable by topic, photographer. location, or time.
Some folks may enjoy looking at the old pics.
http://photogrammar.yale.edu/
A couple samples-- captions from the website:
Women aircraft workers. Perched high on the wing of a giant bomber, women of a large West Coast aircraft factory are speeding the installation of electrical units controlling the engine. In this, as in many other U.S. plants, women are gradually replacing or augmenting men on assembly lines, doing important and highly critical work and doing it well Los Angeles, 1942
Los Angeles, California. The evacuation of the Japanese-Americans from West Coast areas under U.S. Army war emergency order. Japanese-Americans and a few alien Japanese waiting for a train which will take them to Owens Valley April 1942