Barcode History
http://en.wikipedia.org/wiki/Barcode#Historyhttp://en.wikipedia.org/wiki/Barcode#History_of_Barcodes
http://www.adams1.com/pub/russadam/history.html
http://www.lascofittings.com/BarCode-EDI/bc-history.htm
http://escher.cs.ucdavis.edu:1024/CS15/history.html
http://inventors.about.com/library/inventors/blbar_code.htm
http://www.basics.ie/History.htm
http://www.sato-europe.com/whatisdcs&labelling_folder/barcode_technology_folder/history.html
http://www.barcodingsolutionsinc.com/bar_code_history.html
http://educ.queensu.ca/~compsci/units/encoding/barcodes/history.html
Barcode Symbologies
http://www.barcodeisland.com/symbolgy.html
www.adams1.com/pub/russadam/stack.html
Barcode FAQ
http://idautomation.com/barcoding4beginners.html