Gregg Swain will present "Mahjong Symbolism and Why Chairman Mao Banned the Game" as part of the Sweetwood Lecture Series at 4 p.m. Friday, Aug. 15, at Sweetwood of Williamstown, 1611 Cold Spring Road.

Mahjong records were destroyed during the Cultural Revolution in China. An art enthusiast with a newfound passion for Mahjong, Swain studies the art found on vintage Mahjong sets and accessories attempting to understand what the craftsmen intended to convey through the details of their images.

All are welcome. Information: (413) 458-8371.