The Clyffe House - Family housekeeping cottage on 50 acres with sandy beach. French's Fine Homes - Builder of new homes, additions and renovations. Ontario New Home Warranty and R2000 (energy efficiency) registered builder. Trillium Resort and Spa - Muskoka resort also offering cottage rentals and lakeside health spa services. Includes rates and reservation information, details of packages for special occasions, spa stays and golfing. Mini-Yo-We Camp - A year round Christian camp offering outdoor education and summer programs for ages 6 to 16. Mary Lake Association - A volunteer organization of lake residents to promote and preserve Mary Lake. Port Sydney/Utterson and Area Chamber of Commerce - Gateway to local information and resources, including a map, business directory, and community bulletins.