Woman in a Loge, 1879, by Mary Cassatt (1844–1926), oil on canvas, 32 1/16 × 23 7/16 inches (81.5 × 59.5 cm), Philadelphia Museum of Art. The woman may be the artist’s sister Lydia. And, alas, it is currently not on view at the museum. #arthistory #womanartist #womenartists