City of Lansing - Assessing Information
http://finance.cityoflansingmi.com/assessor/propinfo.jsp
username = taxpayer
password = taxpayer

FEMA flood maps (you are allowed to view any flood map without purchasing it)
http://msc.fema.gov/webapp/wcs/stores/servlet/CategoryDisplay?storeId=10001&catalogId=10001&langId=-1&categoryId=12001&parent_category_rn=12001&type=1&stateId=&countyId=&communityId=&stateName=&countyName=&communityName=&dfirm_kit_id=&dfirmCatId=null&isCountySelected=0&isCommSelected=0&userType=G&urlUserType=G&sfc=0&cat_state=13029

Statewide search for subdivision plats (State of Michigan DLEG)
http://www.cis.state.mi.us/platmaps/sr_subs.asp

Statewide search for remonumentation data (State of Michigan DLEG)
http://www.cis.state.mi.us/remon/

Ingham County Assessor (property search)
http://www.ingham.org/eq/eqindex.htm

Terra Server (search by address for aerial maps)
http://terraserver.microsoft.com/AdvFind.aspx

GLO Plat Maps
http://www.dnr.state.mi.us/spatialdatalibrary/PDF_Maps/GLO_plats/GLO_Index.htm

Consumers Energy Gas Maps
http://www.consumersenergy.com/sims/

MDOT Row Maps
http://www.mdot.state.mi.us/rowfiles/index.cfm

Barry County Parcel Maps
http://www.barrycounty.org/ParcelMaps.htm