|A picture is very often truly worth a thousand words as is the case with this iconic photograph of a migrant mother taken in California in 1936 by Dorothea Lange. It has come to epitomize the Great Depression. (Source: NARA)||
Here are some excellent sources for obtaining digital images. Always be sure to check for copyright and any other use restrictions before using any image.
This film, shot by the Miles brothers, was made on April 14, 1906, only four days before the San Francisco earthquake. It was taken from the front window of a moving cable car.