According to Life Along the Manitou Passage’s page on the Pt. Betsie Light (developed in 2001):
The light was constructed in 1858 at a cost of $3,000 and was called the “Point Aux Bec Scies” lighthouse. This point of land is translated from the French as “sawed beak point”. The original 37 foot tower was replaced by a 100 foot structure in 1880 and houses a Fourth Order Fresnel lens. It was not fully automated until 1983, and is the last manned lighthouse on the eastern shore of Lake Michigan.
Time has marched on and in June of 2004, ownership of the light was transferred to Benzie County and is operated by the Friends of Point Betsie Lighthouse. They have an excellent timeline and a wealth of other information about the lighthouse, including their plans for restoration and some great historical and modern day photo galleries.
As is usually the case, Terry Pepper has an excellent narrative on Point Betsie’s history. Thanks also to Jim for uploading this large enough to be my computer wallpaper! ;)