Preliminary Reconnaissance Investigation of the Bogus River Swamp, Langlade County, Wisconsin Open-file report; contains unpublished data that has not yet been peer-reviewed. Surficial Geology Data and Resources WOFR1966-01 Preliminary Reconnaissance Investigation of the Bogus River Swamp, Langlade County, Wisconsin Olcott, P.G.; 1966 Report: 5 p. Download Related Collections Open-File Report View Open-File Report