ArcGIS REST Services Directory

Generate KML (Demographics/USA_Unemployment_Rate)

Document Name:
Layers:
    Percent Unemployment(0)
      Tracts(1)
      Counties(2)
      States(3)
Layer Options: All layers as a single composite image (Layers can't be turned on and off in client)
Each layer as a separate image
Vector layers as vectors and raster layers as images