Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Sec 2-17-2-
a - Normal Section through
Harnish 1/4 g.v.
b - SECTION THR. G.V.
CHANNEL CUTTING INTO
HARNISCH 1/4 g.v.
LOC of SECTION
NW 1/4, Sec 11, T140N, R90W
S. Morton Co.
Clay Pit of Helen Brick Co.
GREAT
CHANNEL
N