https://transparentgov.net:3200/googlemaps31/default?layer_id=1&layer=Head+of+Cattle+per+State¢er_lat=36.916851932633776¢er_long=-96.69602142900061¢er_zoom=5&url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices%2FAgSTAR%2FUSDA_MarketPotential%2FMapServer&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&overlayType=overlayType_image&panto=0&url2=https%3A%2F%2Fgis.la-quinta.org%2Farcgis%2Frest%2Fservices%2Fcoordinate_systems%2Fmask_layer%2FMapServer&layer_id2=1&spatialRelationship=spatial_relationship_Intersects
https://transparentgov.net:3200/googlemaps31/default?layer_id=1&layer=Head+of+Cattle+per+State¢er_lat=36.916851932633776¢er_long=-96.69602142900061¢er_zoom=5&url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices%2FAgSTAR%2FUSDA_MarketPotential%2FMapServer&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&overlayType=overlayType_image&panto=0&url2=https%3A%2F%2Fgis.la-quinta.org%2Farcgis%2Frest%2Fservices%2Fcoordinate_systems%2Fmask_layer%2FMapServer&layer_id2=0&spatialRelationship=spatial_relationship_Intersects
https://transparentgov.net:3200/googlemaps31/default?layer_id=1&layer=Head+of+Cattle+per+State¢er_lat=36.916851932633776¢er_long=-96.69602142900061¢er_zoom=5&url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices%2FAgSTAR%2FUSDA_MarketPotential%2FMapServer&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&overlayType=overlayType_image&panto=0&url2=https%3A%2F%2Fgis.la-quinta.org%2Farcgis%2Frest%2Fservices%2Fcoordinate_systems%2Fmask_layer%2FMapServer&layer_id2=0&spatialRelationship=spatial_relationship_Contains
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&_center_lat=37.84877875029065&_center_long=-122.07572943940639&_center_zoom=16&select_folder=295&select_layer=1
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgis.la-quinta.org%2Farcgis%2Frest%2Fservices&org=La+Quinta+CA&_center_lat=33.6634&_center_long=-116.31&_center_zoom=17&select_folder=53&select_layer=1
"Mask" tool is similar to the "select by location" tool in ArcMap, but this mask tool is 'web' version of that and it is build on Google Maps