You searched for: Provenance Part of Geological Survey (U.S.). Indiana 1:62,500. Remove constraint Provenance: Part of Geological Survey (U.S.). Indiana 1:62,500. Subject Geographic Subject: Iroquois County (Ill.) Remove constraint Subject: Geographic Subject: Iroquois County (Ill.) Subject Geographic Subject: Lake County (Ind.) Remove constraint Subject: Geographic Subject: Lake County (Ind.) State deposited Remove constraint State: deposited