5/6/95 Co Rd Z34 to Preston, then Iowa Hwy 64 west to Magnolia Then US Highway 61 north to Dubuque SCB 5/6/97 / Sperry calcite from Dubuque FM 23 Opposite our motel, Dubuque Iowa Magnolia Drive & US 61. Bldg construct site (Called locally Westport) Heavy equipment businesses Extensive weathered shallow slope with float of iron-replaced beds. Ironstone in upper/middle part dark brownish grey at bottom (6'-8' thick) overlain by 3-4 ft of lighter grey shale. There was evidence of fossiliferous material (not recognizable fossils)