Lou and Herbert Hoover, mystery fans.

On "Hoover Heads," the blog of the Herbert Hoover Library and Museum, Thomas F. Schwartz has written a series of posts on First Lady Lou Henry Hoover and President Herbert Hoover as mystery fans. 

• The friendship of the Hoovers with author Mary Roberts Rinehart.
  
  
• Mystery writers read by the Hoovers, pt 1. (Margery Allingham, Dashiell Hammett, Ellery Queen, Dorothy L. Sayers, S. S. Van Dine)
  
  
• Mystery writers read by the Hoovers, pt 2. (The Detection Club)
  
  
• Mystery writers read by the Hoovers, pt 3. (Margery Allingham, Dashiell Hammett)
  
  
• Mystery writers read by the Hoovers, pt. 4. (Lawrence Saunders, aka John Burton Davis and Clare Ogden Davis; Harry Stephen Keeler)
  
  
  
• Mystery writers read by the Hoovers, pt. 5. (Carolyn Wells)
  
  
• Mystery writers read by the Hoovers, pt. 6. (Agatha Christie, Dorothy L. Sayers)
  
  
• Mystery writers read by the Hoovers, pt. 7. (Freeman Wills Crofts, Robin Forsythe)
  
  
• Mystery writers read by the Hoovers, p. 8. (Harry Ashton-Wolfe)

(Photos: Herbert Hoover, Lou Henry Hoover: NYPL)