I have seen a Michigan Road Map from 1968 or 1969 which shows a skier mark for the Bald Mountain State Recreation Area south of Lake Orion indicating they had downhill skiing there. The recreation area still exists and boasts x-c ski trails but no alpine skiing. I do not know if this area ever had tows, but it looks like there are remnants of a couple runs on the north face of a ridge at the south end of trout lake.
About.com Detroit‘s “List of Cross Country Skiing Places in Oakland County, Michigan” says, “Bald Mountain State Recreation Area in Lake Orion has 8 miles of trails for cross-country skiing through hilly terrain (some of the hilliest in Southeast Michigan) in its North Unit.”
If you have any recollections or reminiscences of lift-served skiing at Bald Mountain, please post them or send me an email using the directions on the About MILSAP page.