The first is that the museum in Trondheim has all of their magazines online. They are in Norwegian, but the photos are fantastic! I am also fortunate enough to have friends from Norway who are more than happy to translate for me.
The other is an article from the 1950's on Early Scottish Textiles. There are several Viking era mentions in it, but the best part is that it includes pertinent details about the actual fabric (including weaving diagrams). I wish that all documents had this information in such and easy to peruse form!
Of course, the internet is not the best resource for research on these topics, but it can definitely help fill in some blanks while you wait for yet another book to arrive via ILL!