Thanks all for the kind words and encouragement.
Here's the closeup which, as usual, looks much harsher than the original due to "fine-tuning" in Photoshop. The paper looks gray, but is actually 'fawn' which is similar to the area where our info is in to the left. The contrast should be softer also. It's been so muggy around Jersey, that I can't take any outside shots to see if I can get a better comparison to the original.
Thanks again.
ps. after looking back at it, the pic on my website of the whole drawing is decent, and it's bigger and clearer.