'Footprints in Time' uses modern-day partnerships to showcase rare 19th-century glass negatives and artifacts. Members of the community are invited to a free opening reception on Friday, February 6, from 6–8 p.m., as County College of Morris , in partnership with the Dover Historical Society and the Dover College Promise Program , unveils “Footprints in Time,” a rare historical photography exhibit in the CCM Gallery . The exhibit will remain on view through Thursday, April 2