Annotated by: Jeffrey A Green. 24k USGS topo map containing dye input points, dye vectors and spring where dye was detected. May also contain spring survey information. Names and phone numbers of property owners have been redacted.
Green, Jeffrey A.
Fountain USGS 24k DRG Topo Map A.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.