I have this great 'Art of Hellboy' book which obviously, has lots of Mignola goodness in it. One of my favourite parts of the book however, isn't the (lovely) Hellboy water-colours he has, but the scans of his black and white pages. What's great about them, is that they're not cleaned up or anything; you can see the different levels of ink he used, the heaviness of the ink lines, etc. it's the next best thing to looking at the actual page. So, here's a reasonably big scan of a section of a recent Sweeney Todd page that i haven't altered. If you look, you can pick out parts that were done with dip-pen nib, brush pen, inky fingerprints, actual indian ink and various splatter effects.
I'll post the whole cleaned-up page in a few days.