Linn County Iowa GIS. (2016). Fall Imagery: Linn County, Iowa, 2012. Linn County, Iowa. http://opendata-linncounty-gis.opendata.arcgis.com/datasets/bbbd86b434d54e73a81e4b5eb28e3f13

Available from: https://geo.btaa.org/catalog/bbbd86b434d54e73a81e4b5eb28e3f13