User:WilliamBDavis/Books/Octopuses and Ink

What do cephalopods have to do with fountain pens?

 * Cephalopod ink
 * Sepia (color)
 * Cephalopod
 * Octopus
 * Squid
 * Cuttlefish
 * Nautiloid
 * Nautilus (genus)
 * Nautilus
 * Allonautilus
 * Ammonoidea