History related links!

http://en.wikipedia.org/wiki/Gas_tungsten_arc_welding

http://www.gowelding.org/History_of_Welding.html

http://www.weldinginfocenter.com/

http://www.netwelding.com/History%20of%20Welding.htm

http://www.usedweldingequipment.com/history.htm

Thermite welding history

http://www.weldinghistory.org/

http://science.howstuffworks.com/welding1.htm

http://www.docstoc.com/docs/10999879/Looking-Back-At-The-History-Of-Welding

arc welding 1930

Old chain forging