Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota
- Author(s):
- Winchell, Newton Horace and Geological and Natural History Survey of Minnesota.
- Description:
- Scale approximately 1:330,000 (W 92°41ʹ--W 89°30ʹ/N 48°14ʹ--N 47°43ʹ). Relief shown by hachures. Cover title: Winchell's Geological map of the iron-bearing rocks of northeastern Minnesota. -- Advance copy. Includes descriptive text inside cover. 18 x 76 cm on sheet 20 x 74 cm
- Collection:
- John R. Borchert Map Library
- Place(s):
- Minnesota, United States
- Subject(s):
- Geological maps
- Year:
- 1887
- Held by:
- Minnesota
- More details at
- http://purl.umn.edu/196923
