Celebrate the 2017 summer opening of the Delaware County Historical Association museum by learning about secret codes invented and used by local residents. Join Samantha Misa for a fascinating discussion on local secrets and encryption. The presentation will feature local diaries and postcards that contain mysterious symbols which have been revealed to be secret codes invented and implemented to keep details from the public eye. A small exhibit on these secret coded works, including the messages revealed after the codes had been cracked, will be on display during the presentation and will remain on display in the DCHA gallery until June 3.