Come Trick-or-Treat on 9th Street! The Regulator Bookshop will join our fellow Ninth Street merchants in welcoming Halloween trick or treaters from 3:00 p.m. to 5:00 p.m. on Thursday, October 31, 2019. We will (of course!) be handing out candy to all our trick or treaters. This event is co-sponsored by the 9th St. Merchants Association.