Early Camp Idlewild of Cow Island Lake Winnipesaukee Photograph. Early photograph unfortunately shows water damage across the front. As shown. Might clean up some. Matting has damaged corners and shows water damage as well. Please look at the pictures provided for more details. The matting measures 10" by 8". Camp Idlewild was open from the early 1890s to the 1970s. Located near wolfboro and tuftonboro.