Michigan is yet another one of those states where I’ve tracked a few collateral family members.
Be sure to look for local historical and genealogical societies and check local public libraries for vertical files and unique items they may house.
If you have Michigan roots, here are some great regional resources:
Access Genealogy – Michigan
Ann Arbor District Library – Genealogy
Bay College Library – Digital Collections
Central Michigan University’s Digital Collections
Cyndi’s List – Michigan
Detroit Public Library – Burton Historical Collection
Detroit Public Library – Digital Collections
FamilySearch – Michigan Online Genealogy Resources
Genealogy Today – Michigan
Kalamazoo Public Library – KPL Digital Collections
Linkpendium – Michigan
Michigan County Histories and Atlases – University of Michigan
Michigan Genealogical Council – List of Michigan societies (mostly with links to each)
Michigan State University – Digital Collections
MIGenWeb – volunteer site, set up by counties, but may have unique pieces of information and records not readily found elsewhere, like family Bible records, letters, etc.
University of Michigan – Bentley Historical Library
University of Michigan – MDigital Collections (a few related to Michigan and its history)
Western Michigan University – Digitized collections