The Dodge County Historical Society in conjunction with the Beaver Dam Community Library is pleased to have renowned Artist and Author Geri Schrab present a lecture on her newly published co-authored book with Wisconsin Archaeologist Robert "Ernie" Boszhardt entitled Hidden Thunder. Geri will present her experiences of visiting various Wisconsin rock art sites with Robert Boszhardt, and how their dual narratives interpret these ancient treasurers through the medium of her renowned watercolor paintings and archaeological science. These personal narratives give this book a rare depth not seen in like books. Geri Schrab's book Hidden Thunder can be purchased the night of the event or through the Wisconsin Historical Society Press. For more information and a RSVP please contact: Kurt A. Sampson, Curator of Museum of the Dodge County Historical Society Museum DCHS Museum: 920-887-1266 or Kurtsampson68@gmail.com.