Our Mission We are committed to providing a complete range of professional tax and accounting services, at affordable fees. We pledge to create an environment that will cause every one of our clients to view us as a trusted business advisor. Great Lakes Accounting of Northern Michigan, Inc. was established in 1986 by Lewis D. Crusoe and Vincent J. Hilleshiem to provide affordable and professional accounting and tax services to individuals as well as small to medium-sized businesses. While our primary service area includes Cheboygan, Mackinac, Presque Isle and Emmet Counties in northern Michigan, our clients are now scattered across the country--from California to the Carolinas. We are independent practicing accountants.