Dorothea Lange shot some of the most memorable photographs in 20th-century America.
But they were still photographs. Now Lange is the subject of a documentary film called "Grab a Hunk of Lightning," a story in moving pictures about her work in still pictures.
It's a labor of love, directed by Dyanna Taylor, who is Lange's granddaughter. She joins us with tales of her grandmother and the film about her.