. . . . "Geologic map of the Indianapolis 1 x 2 quadrangle, Indiana and Illinois, showing bedrock and unconsolidated deposits"@en . . "Geologic map of the Indianapolis 1° x 2° quadrangle, Indiana and Illinois, showing bedrock and unconsolidated deposits"@en . . . . . . . . . "Maps"@en . . . . . . . . "Geologic map of the Indianapolis 1° x 2° quadrangle, Indiana and Illinois showing bedrock and unconsolidated deposits" . . . . . "Illinois" . . "Indiana" . .