The May 1966 issue of 'Vector,' published by the Society for Individual Rights, documents the formal opening of the SIR Community Center at 83 Sixth Street, San Francisco, on April 17, 1966. The issue features articles on the dedication ceremony, community events, and the organization's philosophy of member participation and social activism. It includes coverage of the Fourth National Convention of the Daughters of Bilitis, the formation of the San Francisco Committee to Fight Exclusion of Homosexuals from the Armed Forces, and legal commentary on privacy rights. Community news, event calendars, advertisements, and letters to the editor reflect the social, political, and cultural concerns of the local homophile community. The publication is printed in black and white, with a mix of text, photographs, and illustrated event flyers.