Some Websites...
http://www.usefulweb.org/clarinet/types.html
http://www.jlpublishing.com/ClarinetHistory.htm
http://walkabout.netcomp.monash.edu.au/walkabout/resources/sample-assignments/cpe1003/samplespart1/18966861/part1/history/history.html
http://www.buyrecorders.com/denner_family.htm
http://mmdelrosario.hubpages.com/hub/clarinet
http://musical-instruments.tradetang.com/important-facts-about-the-clarinet/
And for the video in 'How it was made' that video came from the show 'How it's made' and was very helpful.
http://www.jlpublishing.com/ClarinetHistory.htm
http://walkabout.netcomp.monash.edu.au/walkabout/resources/sample-assignments/cpe1003/samplespart1/18966861/part1/history/history.html
http://www.buyrecorders.com/denner_family.htm
http://mmdelrosario.hubpages.com/hub/clarinet
http://musical-instruments.tradetang.com/important-facts-about-the-clarinet/
And for the video in 'How it was made' that video came from the show 'How it's made' and was very helpful.