Lawrence Giffin

Saturday 12/6: Nicholas Mugavero and Lawrence Giffin join the Segue Reading Series. Zinc Bar, 4:30 p.m., $5. Kristen Kosmas, Holly Melgard, and Romsey Scott read poetry. Wendy’s Subway, 8 p.m., free. Sunday 12/7: Diana Hamilton, Kim Rosenfield, Charity Coleman, and…