I was going to look and see how many of the pictures mentioned in chapters 55 and 56 I could find online, but an enterprising soul did the work for me! I highly recommend looking at them, especially chapter 55’s.
http://www.powermobydick.com/Moby056.html (56- the site is a lot less intuitive, but the links to the photos are in the little colored boxes on the side.)
And just for fun, here are some examples of scrimshaw.