Online book sales

"Walking Washington, DC" is sold in bookstores and online. 

http://www.amazon.com/Walking-Washington-D-C-revitalized-spectacles/dp/0899977650

http://www.politics-prose.com/book/9780899977652

http://www.reiters.com/book/9780899977652

http://m.target.com/p/walking-washington-d-c-paperback/-/A-50117307

http://www.walmart.com/ip/46227921

http://origin-wby.barnesandnoble.com/w/walking-washington-dc-barbara-j-saffir/1122741346?ean=9780899977652

http://www.worldbank.org/en/publication/infoshop