| 1930s_airphotos_57 | 1930's Digital Georectified Image of Linn County, Iowa, in MrSid Format | |
| 1950s_airphotos_57 | 1950's Digital Orthorectified Image of Linn County, Iowa, in MrSid Format | |
| 1960s_airphotos_57 | 1960's Digital Orthorectified Image of Linn County, Iowa, in MrSid Format | |
| 1970s_airphotos_57 | 1970's Digital Orthorectified Image of Linn County Iowa | |
| 1980s_CIR_airphotos_57 | 1980's Digital Orthorectified Image of Linn County, Iowa, in MrSid Format | |
| 1990s_airphotos_57 | 1990's Airphoto Mosaic for Linn County | |
| 2002_CIR_57 | 2002 Color-Infra-Red Airphoto Mosaic for Linn County | |
Not Avail. |
2004_NAIP_airphotos_57 | 2004 National Agriculture Imagery Program (NAIP) Aerial Photography for Linn County, Iowa |
| 2005_NAIP_airphotos_57 | 2005 National Agriculture Imagery Program (NAIP) Aerial Photography for Linn County, Iowa | |
| 2006_NAIP_airphotos_57 | 2006 National Agriculture Imagery Program (NAIP) Aerial Photography of Linn County, Iowa | |
| 2007_NAIP_airphotos_57 | 2007 National Agriculture Imagery Program (NAIP) Aerial Photography of Linn County, Iowa | |
| 2008_NAIP_airphotos_57 | 2008 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Linn County, Iowa | |
| 2009_NAIP_airphotos_57 | 2009 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Linn County, Iowa | |
| 2010_CIR_airphotos_57 | 2010 Two Foot Pixel, Color Infrared Orthophotography Mosaic of Linn County Iowa | |
| 2010_color_airphotos_57 | 2010 Two Foot Pixel, Color Orthophotography Mosaic of Linn County Iowa | |
| 2010_NAIP_airphotos_57 | 2010 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Linn County, Iowa | |
| 2011_NAIP_airphotos_57 | 2011 National Agriculture Imagery Program (NAIP) Four-Band Aerial Photography of Linn County Iowa | |
| andreas_atlas_57 | Georectified Image of Linn County from the Illustrated Historical Atlas of the State of Iowa, 1875, by A.T. Andreas | |
| census_1990_57 | US Bureau of the Census, 1990 STF3a block level for Linn County, Iowa | |
| census_2000_blocks_57 | Linn County Census 2000 Blocks | |
| common_land_unit_57 | Common Land Unit for LinnCounty, Iowa | |
| contours_2ft_57 | Generalized Two Foot Contours of Linn County Iowa Derived from Lidar Data | |
| DEM_3M_I_57 | Three Meter Digital Elevation Model of Linn County Iowa as an Imagine 16-bit Integer Raster | |
| DOT_roadmap_57 | Iowa DOT Linn County Highway Transportation Map, 2005 | |
| FEMA_DFIRM_57 | Digital Flood Insurance Rate Map Database of Linn County Iowa | |
| GLO_maps_57 | General Land Office (GLO) Maps of the State of Iowa, as Surveyed from 1836-59, Linn County | |
| GLO_vegetation_57 | Government Land Office Vegetation 1832-1859 for Linn County, Iowa | |
| Hillshade_1M_57 | Hillshade of Linn County Iowa Derived from the LiDAR One Meter Digital Elevation Model | |
| HRLC_2009_57 | High Resolution Landcover of Linn County Iowa, 2009 | |
| NWI_57_line | National Wetlands Inventory data for Linn County, Iowa | |
| NWI_57_poly | National Wetlands Inventory data for Linn County, Iowa | |
| NWI_remap_line_57 | National Wetland Inventory Remap and Update, Line Features, of Linn County, Iowa | |
| NWI_remap_poly_57 | National Wetland Inventory Remap and Update, Polygon Features, of Linn County, Iowa | |
| PLSS_57 | Public Land Survey System for Linn County, Iowa | |
| PLSS_QQQ_57 | Public Land Survey System, Quarter-Quarter-Quarter Sections, of Linn County Iowa | |
| rivers_57 | Rivers of Linn County | |
| roads_2006_57 | Road Centerlines of Linn County, Iowa, 2006, from Iowa DOT GIMS files | |
| spot_57 | Digital spot data for Linn County, Iowa | |
| ssurgo_line_57 | Soil Survey Geographic (SSURGO) Database for Linn County, Iowa | |
| ssurgo_soil_57 | Soil Survey Geographic (SSURGO) Database for Linn County, Iowa | |
| ssurgo_spot_57 | Soil Survey Geographic (SSURGO) Database for Linn County, Iowa | |
| USGS_quads_57 | USGS 7.5' Quad Mosaic for Linn County |