Meyer, Gary N.Mossler, John H.Data base map showing water well and soil boring locations used to develop the interpretions for the map M-102, in the Twin cities, seven county Metropolitan area, Minnesota, northern half of study area, scale 1:100,000.PDFengMinnesota Geological SurveyPublicPrimary sources of construction aggregate in the Twin Cities Seven-County Metropolitan Area, Minnesota, M-102, Plate 2, north sheetMapsMinnesota1999University of Minnesota