This brown top-flip field notebook details the survey conducted and samples taken of Keweenawan rock in three individual surveys by geologist, John Green. The survey conducted between July 17 through August 3 of 1968 was located between Duluth and Grand Marais of Minnesota. The second survey was conducted on August 17-19, 1968 and was a part of ...
Creator:
Green, John C.
Created:
1968-07 - 1968-10
Contributed By:
University of Minnesota Libraries, University Archives.