A Monetary History of the United States, 1867 to 1960, by Milton Friedman and Anna Schwartz, is a classic study of monetary policy and was published in 1963. Read the interview with Anna Schwartz available at www.minneapolisfed.org/publications/the-region/interview-with-anna-j-schwartz, and explain what you think was the main contribution of this book. (Other interesting interviews with famous macro economists are gathered at https://minneapolisfed.org/publications/the-region/interview-index.)