Millions of Americans are enjoying the day off work and school, but some may have lost the significance of the national holiday. Kenneth C. Davis, author of "Don't Know Much About History," joins the "CBS This Morning" co-hosts to talk about Labor Day.
Bethanne Patrick talks with Kenneth C. Davis about his book, A Nation Rising: Untold Tales of Flawed Founders, Fallen Heroes, and Forgotten Fighters from America's Hidden History.
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