The Grayslake Historical Society will host a holiday open house from noon-4 p.m. on Sunday, December 13. Mr. and Mrs. Claus will make an appearance between 2 and 4 p.m. and will be available for photographs with the Historical Society’s antique sleigh. The Warren Township High School Alumni Choir will perform at 2 p.m. Enjoy refreshments, children’s crafts and fellowship.