Currently, there is a collection of Mark's work on exhibit, belonging to Mark and Margie Cromwell, and due to the positive response, it is on display and the museum is open Wednesday to Sunday, From 10 a.m. to 5 p.m.  It is in the historic deWitt Cottage Museum at 1113 Atlantic Avenue in Virginia Beach, Virginia. Upstairs in the museum are works of Mark’s son, Ian McNair, and a few of Colin’s as well.