Topographical Map of Johnson County, Iowa
Full Details
Warning: This record was migrated to a new platform. Select the "Is replaced by" link for an active record.
About & Help
Policies
Sponsors
BTAA Geoportal Collection Stories
- Applying Deep Learning Models to BTAA GeoPortal Collections • July 1, 2025
- Leveraging 3D GIS to promotion and discoveries map collection • May 8, 2025
- Building the Historical Maps of New Jersey website • April 3, 2025
- Discovery of Geological Maps in the BTAA Geoportal • March 4, 2025
- Spanker’s Branch to Campus River • January 16, 2025
BTAA Member Libraries
- Indiana University
- Michigan State University
- Northwestern University
- Pennsylvania State University
- Purdue University
- Rutgers University
- The Ohio State University
- University of Chicago
- University of Illinois
- University of Iowa
- University of Maryland
- University of Michigan
- University of Minnesota
- University of Nebraska-Lincoln
- University of Oregon
- University of Washington
- University of Wisconsin-Madison