Nebel, Merle Louis, 1892-19181 map : color; 45 x 68 cm, on sheet 55 x 89 cmScale 1:62,500 (W 91°00ʹ--W 90°30ʹ/N 40°45ʹ--N 40°30ʹ). ; Relief shown by contours and spot heights.; Title supplied by cataloger.; 'A. Hoen & Co. Baltimore, Md.'; Includes stratigraphic column.; 'Bul. No. 43, Plate I.'9980772839502441ark:/81985/n26t0jw8nState Geological Survey,;A. Hoen & Co.Public[Geology of the La Harpe and Good Hope quadrangles]MapsIllinois--La Harpe RegionIllinois--Warren CountyIllinois--McDonough County1923Northwestern University