Color scrimshaw on ancient mammoth ivory tusk by Joel Cowan. When it comes to detailed (and I do mean detailed) ship portraits, there is Joel Cowan and then there is everyone else. Working in time consuming stipple technique, Cowan does thousands and thousands of tiny dots for each prized portrait. We have worked with Cowan for several decades and are fortunate enough to have accumulated several of his pieces. These are prized by knowing collectors throughout the U.S. and abroad and many collectors have several Cowans in their collections. Now is the perfect opportunity to acquire one for yourself.