The Detroit Historical Society shared this map from their archives. At one point, someone had told me that because of how densely Catholic Detroit was many people would refer to their parish as their neighborhood because it represented the area where you went to church and school.
DETROITography 
Born and raised Catholic in Detroit I would love to have one of these maps. I was born in 1957. I attended St Theresa and St Martin DePorres. I watched the transition in the 60s and the exodus out of the city.
How can i get a copy of detroit 1935 parish map