Digital Maps and Geospatial Data | Princeton University
Map of the city of Detroit, Michigan, 1904, showing wards and election districts.
Leaflet | Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012