Ok, i have found this spot in Westfall, its the Jangolode Mine, near the sea. The mobs here are lvl 11-14 or 15 so its an easy kill if you are lvl 30+. These guys will usually drop 1-3 linen per drop. I have a lvl 40 Rogue that kills them pretty quick, so i get alot. What i did was i got a low lvl, someone about lvl 20, to pick up all the linen i got for me, so it would save me some time, i just paid him about 5s per stack. This mine is usually deserted on my server, Moonrunner, but it may not be on your server. i hope this was helpful