Filmmaker uses home movies to look at the history of cities. Rick Prelinger has spent his career peering into other people's pasts, using home movies as a lens on history. He has amassed 17,000 home movies, now contained in a digital library called the Prelinger Archives. Most of the footage is made available free to the public to use as they wish, but Prelinger has also used it to create a unique film series called "Lost Landscapes." These carefully edited montages present the life of a city across a hundred years, in the span of about an hour. During more than a decade, he has created films about New York, Detroit, Oakland, Los Angeles and San Francisco. NewsHour Weekend Special Correspondent Joanne Elgart Jennings reports.