Fans of Concord gasholder set online discussion Tuesday The iconic gasholder building on South Main Street in Concord is seen on Monday, Jan. 29, 2018. The structure has been added to the National Register of Historic Places. (ELIZABETH FRANTZ / Monitor staff) Elizabeth Frantz By Monitor staff Published: 12/28/2020 5:05:06 PM Fans of Concord’s gasholder will hold a program on Facebook Live on Tuesday, Dec. 29, from 10 to 10:30, as the deadline nears for the historic building. Find the link on the Facebook page of Visit Concord, NH to hear from speakers who will ideas about the importance and future of the brick building. Scheduled speakers include Alex Ray, founder of Common Man and recent Concord Chamber award winner; Concord high school student John Horangic; and others.