Been doing some research on viking knifes going to put some links here

http://leatherworkingreverend.wordpress.com/2009/07/05/rus-knife-9th-century/

http://jorvik-viking-centre.co.uk/about-jorvik/gallery/

http://en.wikipedia.org/wiki/Viking_Age_arms_and_armour#Knife

http://www.britishblades.com/forums/showthread.php?55016-Viking-handle-materials

http://www.warehamforge.ca/norse-knives/

http://www.metmuseum.org/collection/the-collection-online/search/465692?rpp=30&pg=1&ao=on&ft=sword&when=A.D.+500-1000&pos=20