1930s_airphotos_20	1930's Digital Orthorectified Image of Clarke County, Iowa, in MrSid Format
	1950s_airphotos_20	1950's Digital Orthorectified Image of Clarke County, Iowa, in MrSid Format
	1960s_airphotos_20	1960's Digital Orthorectified Image of Clarke County, Iowa, in MrSid Format
	1970s_airphotos_20	1970's Digital Orthorectified Image of Clarke County Iowa
	1980s_CIR_airphotos_20	1980's Digital Orthorectified Image of Clarke County, Iowa, in MrSid Format
	1990s_airphotos_20	1990's Airphoto Mosaic for Clarke County
	2002_CIR_20	2002 Color-Infra-Red Airphoto Mosaic for Clarke County
	2004_NAIP_airphotos_20	2004 National Agriculture Imagery Program (NAIP) Aerial Photography for Clarke County, Iowa
	2005_NAIP_airphotos_20	2005 National Agriculture Imagery Program (NAIP) Aerial Photography for Clarke County, Iowa
	2006_NAIP_airphotos_20	2006 National Agriculture Imagery Program (NAIP) Aerial Photography of Clarke County, Iowa
	2007_NAIP_airphotos_20	2007 National Agriculture Imagery Program (NAIP) Aerial Photography of Clarke County, Iowa
	2008_NAIP_airphotos_20	2008 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Clarke County, Iowa
	2009_CIR_airphotos_20	2009 Two Foot Pixel, Color Infrared Orthophotography Mosaic of Clarke County Iowa
	2009_color_airphotos_20	2009 Two Foot Pixel, Color Orthophotography Mosaic of Clarke County Iowa
	2009_NAIP_airphotos_20	2009 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Clarke County, Iowa
	2010_NAIP_airphotos_20	2010 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Clarke County, Iowa
	2011_NAIP_airphotos_20	2011 National Agriculture Imagery Program (NAIP) Four-Band Aerial Photography of Clarke County Iowa
	Address_20	Address Points of Clarke County, Iowa
	andreas_atlas_20	Georectified Image of Clarke County from the Illustrated Historical Atlas of the State of Iowa, 1875, by A.T. Andreas
	census_1990_20	US Bureau of the Census, 1990 STF3a block level for Clarke County, Iowa
	census_2000_blocks_20	Clarke County Census 2000 Blocks
	common_land_unit_20	Common Land Unit for ClarkeCounty, Iowa
	contours_2ft_20	Generalized Two Foot Contours of Clarke County Iowa Derived from Lidar Data
	DEM_3M_I_20	Three Meter Digital Elevation Model of Clarke County Iowa as an Imagine 16-bit Integer Raster
	DOT_roadmap_20	Iowa DOT Clarke County Highway Transportation Map, 2005
	GLO_maps_20	General Land Office (GLO) Maps of the State of Iowa, as Surveyed from 1836-59, Clarke County
	GLO_vegetation_20	Government Land Office Vegetation 1832-1859 for Clarke County, Iowa
	Hillshade_1M_20	Hillshade of Clarke County Iowa Derived from the LiDAR One Meter Digital Elevation Model
	HRLC_2009_20	High Resolution Landcover of Clarke County Iowa, 2009
	NWI_20_line	National Wetlands Inventory data for Clarke County, Iowa
	NWI_20_poly	National Wetlands Inventory data for Clarke County, Iowa
	NWI_remap_line_20	National Wetland Inventory Remap and Update, Line Features, of Clarke County, Iowa
	NWI_remap_poly_20	National Wetland Inventory Remap and Update, Polygon Features, of Clarke County, Iowa
	PLSS_20	Public Land Survey System for Clarke County, Iowa
	PLSS_QQQ_20	Public Land Survey System, Quarter-Quarter-Quarter Sections, of Clarke County Iowa
	rivers_20	Rivers of Clarke County
	roads_2006_20	Road Centerlines of Clarke County, Iowa, 2006, from Iowa DOT GIMS files
	soils_20	Iowa Cooperative Soil Survey (ICSS) Digital Soil Data for Clarke County
	spot_20	Digital spot data for Clarke County, Iowa
	ssurgo_line_20	Soil Survey Geographic (SSURGO) Database for Clarke County
	ssurgo_soil_20	Soil Survey Geographic (SSURGO) Database for Clarke County
	ssurgo_spot_20	Soil Survey Geographic (SSURGO) Database for Clarke County
	Structures_20	Structures of Clarke County, Iowa
	USGS_quads_20	USGS 7.5' Quad Mosaic for Clarke County