Michigan Bell Telephone CompanyMichigan Bell Telephone CompanyGeneral Telephone Company of MichiganMichigan Bell Telephone CompanyGeneral Telephone Company of MichiganExtent: 1 map Abstract: Map of Sanilac County, Michigan, showing named telephone exchange boundaries, including "Gen'l Tel. Co." and "Continental Tel. Co." exchanges. Notes: Includes revision date history table and location map.TIFF/JPEGoai:d.lib.msu.edu:maps_1140https://n2t.net/ark:/85335/m5x924996engMichigan Bell Telephone CompanyPublicTelephone companiesTelephone stationsSanilac CountyMapsMichigan--Sanilac CountyMichigan1971Michigan State University