In this encore edition of River to River, listen back to host Ben Kieffer's tour of the Herbert Hoover Presidential Library and Museum with its Director Tom Schwartz. Schwartz talks about the role of presidential museums and libraries in light of the recent opening of the George W. Bush Library in Dallas. Schwartz also discusses President Hoover himself and the museum’s exhibit that commemorates the 150th anniversary of the Civil War. It’s called Iowans and the Civil War: The Western Theater. The exhibit includes a Civil War field hospital, and signed copies of the Emancipation Proclamation and the Thirteenth Amendment.