Exploring Silicon Valley's History in Photos

Most Californians realize the name "Silicon Valley" is as much an umbrella term as it is a description of a geographic place, not unlike "Hollywood" or "Wall Street." But ask somebody inside or outside the Santa Clara Valley about the history of the place before Big Tech, and you're likely to draw a blank. There were orchards. It's the home of Stanford University. And that's about it. We talk with historian Mary Wadden about her book "Silicon Valley: The History in Pictures."