(Seattle, WA)  --  The annual "Most Well-Read Cities in America" survey is out from Amazon.com.  Seattle holds the top spot, followed by Portland, Las Vegas, Tucson, and Washington, DC.  Amazon compiles data containing the purchases of books, Kindle books, magazines, and newspapers from April 2014 to April of this year.  The rankings are calculated on a per-capita basis in cities with more than 500-thousand residents.