The Great Lakes Lighthouse Keepers Association is selling raffle tickets for a tower tour of the Mackinac Bridge for two people. Raffle tickets can be purchased for $5 each or five for $20 at the association's office in Mackinaw City at 707 North Huron Avenue, or at the Web site, www.gllka.com/store/index.htm .

Proceeds from the raffle benefit the organization's lighthouse preservation and educational programs. The drawing for the raffle will be March 31, 2010.