1930s_airphotos_75	1930's Digital Orthorectified Image of Plymouth County, Iowa, in MrSid Format
	1950s_airphotos_75	1950's Digital Orthorectified Image of Plymouth County, Iowa, in MrSid Format
	1960s_airphotos_75	1960's Digital Orthorectified Image of Plymouth County, Iowa, in MrSid Format
	1970s_airphotos_75	1970's Digital Orthorectified Image of Plymouth County Iowa
	1980s_CIR_airphotos_75	1980's Digital Orthorectified Image of Plymouth County, Iowa, in MrSid Format
	1990s_airphotos_75	1990's Airphoto Mosaic for Plymouth County
	2002_CIR_75	2002 Color-Infra-Red Airphoto Mosaic for Plymouth County
	2004_NAIP_airphotos_75	2004 National Agriculture Imagery Program (NAIP) Aerial Photography for Plymouth County, Iowa
	2005_NAIP_airphotos_75	2005 National Agriculture Imagery Program (NAIP) Aerial Photography for Plymouth County, Iowa
	2006_NAIP_airphotos_75	2006 National Agriculture Imagery Program (NAIP) Aerial Photography of Plymouth County, Iowa
	2007_CIR_airphotos_75	2007 Two Foot Pixel, Color Infrared Orthophotography Mosaic of Plymouth County Iowa
	2007_color_airphotos_75	2007 Two Foot Pixel, Color Orthophotography Mosaic of Plymouth County Iowa
	2007_NAIP_airphotos_75	2007 National Agriculture Imagery Program (NAIP) Aerial Photography of Plymouth County, Iowa
	2008_NAIP_airphotos_75	2008 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Plymouth County, Iowa
	2009_NAIP_airphotos_75	2009 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Plymouth County, Iowa
	2010_NAIP_airphotos_75	2010 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Plymouth County, Iowa
	2011_NAIP_airphotos_75	2011 National Agriculture Imagery Program (NAIP) Four-Band Aerial Photography of Plymouth County Iowa
	andreas_atlas_75	Georectified Image of Plymouth County from the Illustrated Historical Atlas of the State of Iowa, 1875, by A.T. Andreas
	census_1990_75	US Bureau of the Census, 1990 STF3a block level for Page County, Iowa
	census_2000_blocks_75	Plymouth County Census 2000 Blocks
	common_land_unit_75	Common Land Unit for PlymouthCounty, Iowa
	contours_2ft_75	Generalized Two Foot Contours of Plymouth County Iowa Derived from Lidar Data
	DEM_3M_I_75	Three Meter Digital Elevation Model of Plymouth County Iowa as an Imagine 16-bit Integer Raster
	DOT_roadmap_75	Iowa DOT Plymouth County Highway Transportation Map, 2005
	GLO_maps_75	General Land Office (GLO) Maps of the State of Iowa, as Surveyed from 1836-59, Plymouth County
	GLO_vegetation_75	Government Land Office Vegetation 1832-1859 for Plymouth County, Iowa
	Hillshade_1M_75	Hillshade of Plymouth County Iowa Derived from the LiDAR One Meter Digital Elevation Model
	NWI_75_line	National Wetlands Inventory data for Plymouth County,Iowa
	NWI_75_poly	National Wetlands Inventory data for Plymouth County,Iowa
	NWI_remap_line_75	National Wetland Inventory Remap and Update, Line Features, of Plymouth County, Iowa
	NWI_remap_poly_75	National Wetland Inventory Remap and Update, Polygon Features, of Plymouth County, Iowa
	PLSS_75	Public Land Survey System for Plymouth County, Iowa
	PLSS_QQQ_75	Public Land Survey System, Quarter-Quarter-Quarter Sections, of Plymouth County Iowa
	rivers_75	Rivers of Plymouth County
	roads_2006_75	Road Centerlines of Plymouth County, Iowa, 2006, from Iowa DOT GIMS files
	soils_75	Iowa Cooperative Soil Survey (ICSS) Digital Soil Data for Plymouth County
	spot_75	Digital spot data for Plymouth County, Iowa
	USGS_quads_75	USGS 7.5' Quad Mosaic for Plymouth County