The kind folks at the National Constitution Center sent me a lovely 2016 Civic Calendar. It has a civic holiday on each month with notes about the museum and its collections, historical notes scattered around the days of that month, and a brightly colored picture. It is a very jazzy calendar. Going by the way it was addressed I think I got it because I took a group of kids there a few years ago. I'm not sure if they are publicly available but it might be worth investigating.