I didn't know that!: An exhibition of first happenings in Maryland By Heyl, Edgar G Books / Other Books Publisher: Maryland Historical Society, January 1973 Price Starting at $19.70 Free Shipping Send to a friend Add to Wishlist Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Used - Very Good Very Good condition. Paperback edition. (Maryland, History, Exhibition Catalogs) A copy that may have a few cosmetic defects. May also contain a few markings such as an owner’s name, short gifter’s inscription or light stamp. $19.70 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for I didn't know that!: An exhibition of first happenings in Maryland There are not any review yet for this book