<a href="http://en.wikipedia.org/wiki/Barcode#History" target="_blank">http://en.wikipedia.org/wiki/Barcode#History</a><br>
          <a href="http://en.wikipedia.org/wiki/Barcode#History_of_Barcodes" target="_blank">http://en.wikipedia.org/wiki/Barcode#History_of_Barcodes</a><br>
          <a href="http://www.adams1.com/pub/russadam/history.html" target="_blank"> 
          </a> <a href="http://www.adams1.com/pub/russadam/history.html" target="_blank"> 
          http://www.adams1.com/pub/russadam/history.html</a><br>
          http://www.lascofittings.com/BarCode-EDI/bc-history.htm<br>
          http://escher.cs.ucdavis.edu:1024/CS15/history.html<br>
          http://inventors.about.com/library/inventors/blbar_code.htm<br>
          http://www.basics.ie/History.htm<br>
          http://www.sato-europe.com/whatisdcs&amp;labelling_folder/barcode_technology_folder/history.html<br>
          http://www.barcodingsolutionsinc.com/bar_code_history.html<br>
          http://educ.queensu.ca/~compsci/units/encoding/barcodes/history.html<br>

http://www.barcodeisland.com/symbolgy.html
www.adams1.com/pub/russadam/stack.html

http://idautomation.com/barcoding4beginners.html