Ok, here's Rachel's inks for the cover. Rachel inked directly over my pencils with a Windsor Newton Series 7 Size 2 Kolinsky Sable Brush, FW Acrylic Black Ink and Pro White and then erased the piece with a Grande White Eraser.
So here's the pencil version of the cover. It was drawn on 13 x 19" 3 ply Strathmore Bristol Board with a Prismacolor Col-Erase Light Blue Pencil and a Staedtler HB Lead Holder. After this was scanned, I redrew Wolverine's face (as it seemed too small) and added a more detail in the background (to give you more of the feel of a New York Subway and more of lighting/atmosphere) which you will see in the inked version.