![1860 Penn Michigan landownership map](images/maps/CassPenn1860.png)
![1897 Penn Michigan landownership map](images/maps/CassPenn1897.png)
![2010 Penn Michigan landownership map](images/maps/CassPenn2010.png)
Choose a land-ownership map to view, and then use the opacity slider to overlay the historic map onto a 2010 census street map. Slowly change the opacity until you can see both maps clearly or view each map separately by moving the slider to the top or bottom.