https://gis-prod.calvin.edu:6443/arcgis/rest/services/SampleWorldCities/MapServer
https://gis-prod.calvin.edu:6443/arcgis/rest/services/562/CO2/MapServer
https://gis-prod.calvin.edu:6443/arcgis/rest/services/562/COMP234_IMG/ImageServer
https://gis-prod.calvin.edu:6443/arcgis/rest/services/Utilities/RasterUtilities/GPServer
https://gis-prod.calvin.edu:6443/arcgis/rest/services/Utilities/Symbols/SymbolServer