Boulders shift. Canyons erode. Old trees fall. New ones grow. And tourists crowd Yellowstone National Park. The length of their vacations is barely any time at all in the stream of history.

Use this lesson plan to introduce students to the history of photography and to the sorts of stories that historical photographs.

This site, entitled Arles: Provence Beyond provides history, information, and images of the town.

Take a look at the history of cameras from the first pinhole camera in the 11th century to the modern day digital camera.

The Missouri Botanical Garden describes the characteristics and natural history of mollusks in text and color photography.