Greenstone Farm Credit Service Address: 100 S Elk St, Sandusky, MI 48471 Phone: (810) 648-2600 Hours: Mon: 8am-4:30pm Tue: 8am-4:30pm Wed: 8am-4:30pm Thu: 8am-4:30pm Fri: 8am-4:30pm Loans, Credit Unions Other Businesses: Edward Jones - Financial Advisor: Dan Everhart at 70 S Elk St, Sandusky, MI 48471-1354 Buyer's Guide at 65 S Elk St, Sandusky, MI 48471