What is a good book of biographies about living Americans?

Peter Dreier's "The 100 Greatest Americans of the 20th Century: A Social Justice Hall of Frame" is a book that contains biographies of some of the most influential progressive thinkers of the 20th century, some of whom are still alive, as of 2015. It has largely positive reviews on Amazon.com.

The concise biographies in Dreier's book include significant details about each figure's life and explain how he or she fits into the different progressive movements in America. Michael Moore and Bruce Springsteen are two of the many living Americans covered in the book. The book also includes a general timeline that marks the major events in each figure's life.