Finding Your Way in a Pre-GPS World

The April 24 issue of The New Yorker contains an entertaining article about pre-GPS car navigation technology dating back to 1907.

Which of the following devices were not among the GPS precursors:

• McNally's Photo-Auto Guide (a series of turn-by-turn photographs between 2 cities)
  
• Neva's Stop-n-Ask (a device that should make even the most stubborn man ask for directions)
  
• Jone's Live-Map (directions stored on phonograph-like disks that connected to an odometer)
  

You'll have to read the article to find out.

via: The New Yorker