The Back of the Napkin (Expanded Edition): Solving Problems and Selling Ideas with Pictures
ISBN: 1591843065
Buy on Amazon
Found in 1 comment on Hacker News
brudgers · 2011-10-28 · Original thread
A good book on sketching and it's application as a business communication tool is Dan Roam's The Back of the Napkin.

http://www.amazon.com/Back-Napkin-Expanded-Problems-Pictures...

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