Just came across www.michiganrailroads.com . The site has maps,histories and forums.
Railroad Forums
Just found a good Michigan railfan website.
- Pertaining to all railroading subjects, past and present, in the American Midwest, including Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa and Kansas. For questions specific to a railroad company, please seek the appropriate forum.
Moderator: railohio
Try railroadmichigan.com! there are some cool pictures of Steam, Diesels, and even some MOW equipment. However, some of the pictures when you want to see them in another window, says that there is a error.