THE IRON ORES OF MINNESOTA, Their Geology, Discovery, Development.With A Geological Map, 26 Figures and 44 Plates, Geological and Natural History Survey of Minnesota Bulletin No. 6

Illus., 9.5 x 6.5", blindstamped brown cloth, gilt lettering on spine, 430pp. Covers worn and rubbed, spine/spine lettering sunned, edgeworn, pencil name on ffep, ink stamp on title page "From The Geological And Natural History Survey, Minneapolis-Minn.", front inner hinge cracked, spotting to top page edges, map packet has tears, toning else good to very good condition. Two maps/plate are in the pocket inside the rear cover. Comes with bound in errata slip which indicates that not all copies will have the geological map and that it will be available on May 10, 1891. This copy does not have the geologic map. Pencil name of prominent geologist Edwin E. Howell. Howell was a geologist with USGS who worked on the surveys west of the Rockies and also worked with John Wesley Powell on the USGS survey of the Rockies. As a cartographer he created some of the best raised relief maps of his era. SCARCE.