So summer isn't the ideal time for reflecting on death, but in Chelsea, it is the season for thematic group shows. Bellwether exhibits remembrances of those who are no longer with us, created by artists who are. In memoriam are Anna Nicole Smith, whose outsized life is celebrated with a bright pink floral arrangement by Marc Swanson and fashion photographer Joe Mama-Nitzberg; artist Tammy Rae Carland's mother, whose belongings are carefully arranged and photographed by her daughter; and Brad Will, who died in Mexico supporting a teachers' strike. Curators also display three types of funerary items that are alternately creepy and exquisite — joss-paper effigies from China, Ghanaian fantasy coffins, and Victorian hair wreaths.