Location: West Branch, Iowa (also Hoover's birthplace in 1874)
Admission: $6 adults; $3 seniors
Bestselling gift shop biography: ”Herbert Hoover: A Public Life” by David Burner
Hot-selling souvenir item: ruler with pictures of all the presidents
Lesser-known fact: From 1978 to 1997, the Hoover Library had a cat, named Herbie, who lived on the front porch in a custom made replica of President Hoover's birthplace cottage.