Sources:

Various articles on Wikipedia
Google News
The Boston Public Library
http://thewoolworthbuilding.com
http://www.gcmurphy.com
http://www.fundinguniverse.com
http://www.dollargeneral.com
http://www.familydollar.com


FAIR USE OF VARIETY AND DOLLAR STORE IMAGES:

The graphics from The Sarasota Journal, Times Daily, Tacoma Public Library, Laguna Historical Society, Dollar General Stores and Family Dollar Stores help illustrate key moments in retail industry history that are described in the article. The images are of lower resolution than the originals (copies made would be of inferior quality). The images are not replaceable with free-use or public-domain images. The use of the images does not limit the copyright owners' rights to distribute the images in any way. The images are being used for non-profit, informational purposes only and their use is not believed to detract from the original images in any way.