This is actually in a hard-bound blank book (10 x 12). I called the book "Portraits" and hence every pair of pages has a single portrait on it, plus the person's name, the day, the place, etc ...
I decided that my sketchbook would actually be a work of art in itself, and a lovely coffeetable book to boot. So every piece is a finished drawing, but it is also where I get my sketching practice in. Most of the portraits are done from life and not from photos (as in ghandi), I probably have 12 in all, got about 50 to go ;-).