Becky Senf , from the Center for Creative Photography, posted news this week that Lewis Baltz had passed away. I always enjoyed his images and was lucky to have studied under Bill Jenkins, who curated the New Topographics exhibition which brought to prominence Baltz's work. Bill was one of my professors at Arizona State University. Below are links to the Washington Post article about Baltz's passing as well as another 2010 feature on New Topographics.
http://www.theguardian.com/artanddesign/2010/feb/08/new-topographics-photographs-american-landscapes