Grayslake AuthorFest brings together authors, readers, and aspiring writers. *** FREE ADMISSION *** Founded by local writers from Lake and McHenry counties, and supported by groups and individuals throughout Grayslake, Illinois, the third annual Grayslake AuthorFest is an event you'll want to add to your calendars! Grayslake Heritage Center and Museum 164 Hawley St. Grayslake IL 60030 For updated