If you ever had the desire to browse through the very first Kelly Blue Book, then you are in luck. The Kelly Blue Book app for the iPhone actually has a hidden copy of the 1926 edition of the Kelly Blue Book just waiting to be found.

To get to it, simply open the Kelly Blue Book app. Once on the app homescreen, shake your phone for a bit and a new window will pop up with the 1926 version of the book. To return to the normal app, just press the "Home" icon on the top left corner of the screen.

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