Does anyone have any links or pics of the Tang Dynasty single edged straight swords? (it is sort of the precursor to the katana)

Also, anyone have links or info on sleve arrows/sleve needles?

I think there are several threads which has images of the tang swords.
Do a search

Thomas Chen's website

http://thomaschen.freewebspace.com/index.html

is pretty much the most comprehensive info you'll find on Chinese swords on the net. The Sui/Tang section has the swords you're looking for