Available at these fine museums and galleries:

The Museum of Fine Arts - Boston, MA
Gates Studio (artist studio: click here for appt) - Wellesley, MA
Kendall Art Gallery - Wellfleet, MA
Mark August - Chatham, MA
JW Graham Gallery - Wickford, RI
American Museum of Natural History - New York, NY
Woodmere Art Museum - Philadelphia, PA
NOA Gallery - Groton, MA
Smithsonian Museum - Washington, DC