This weekend, I found the dragon picture from my Sept 27 post in the book The Cultural Atlas of the Viking World edited by James Graham-Campbell, on page 139. I was browsing the book looking for pictures of bead necklaces (only had one small pic). Luckily this book is wise enough to include a thourough and detailed List of Illustrations in the back, and our dragon can be found at the Cambridge University Library, call number MS Ff 1.23, f. 37v.
Sadly Cambridge has not digitized all their manuscripts, but according to the website, items in the "double letter" collection are not restricted and can be looked at freely as long they are not being restored. Great, I'll phone British Airways right now... Just kidding. :)