Submitted photo Markers such as this one, designating the location of Rev. Martin Kinney's home on State Street, are to be part of the Racine Underground Railroad Freedom Heritage Trail. RACINE â The city is a bit closer to memorializing the important role it played for people escaping slavery on the Underground Railroad. Graves Signs has been awarded a contract for nine cast bronze historical markers that will commemorate stops on the Racine Underground Railroad Freedom Heritage Trail, which actually includes 27 sites across the county, but only the nine in the Main Street business area will be memorialized at this time.