These free classes are open to the public, with no prior classes required.

Archaeological Dating Methods: 4:30-6 p.m., Monday and Wednesday, Oct. 19 to Nov. 18, Zoom.Prehistoric Lithic Description and Analysis: 5-8 p.m., Tuesdays, Oct. 20 to Nov. 17, Zoom. Archaeological Laboratory Techniques: on demand, Oct. 19 to Nov. 13, Google Classroom. Access to a Google account is necessary for this class.For information and registration, visit www.historycolorado.org/paac-event-schedule.