Hari Sreenivasan:

Perhaps the most enduring image of the Great Depression is Dorothea Lange's 1936 portrait of a migrant mother in Nipomo, California. The photographer found the woman sitting in a camp where field workers had assembled after their pea crops had failed.

The great recession of our era perhaps has no such single image. But photographer and writer Chris Arnade has a bookful of images with an equally compelling and intimate perspective of what he calls "back row" america.

For more than ten years he's been travelling the country taking pictures and writing stories about Americans forced to the margins and trying to survive. NewsHour Weekend's Christopher Booker has more.