You searched for: Creator Marshall, R. B. (Robert Bradford), 1867-1949 Remove constraint Creator: Marshall, R. B. (Robert Bradford), 1867-1949 Date Created 1958 Remove constraint Date Created: 1958 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: Knox County (Ind.) Remove constraint Subject: Geographic Subject: Knox County (Ind.)