7-9pm, suggested donation $10, Bureau of General Services—Queer Division at the LGBT Center, 208 W 13th St, Rm 210, 646-457-0859, bgsqd.com. Join  the BGSQD for the launch of “Undercover Girl: The Lesbian Informant Who Helped the FBI Bring Down the Communist Party,” by Lisa E. Davis. The book’s focus is Angela Calomiris, a Village photographer well-paid by the FBI to spy on the New York Photo League and the American Communist Party.