hi moonraker i did the map for the province of bolzano it was done to show how the italian german distribution has changed over the last century history of south tyrol linguistic and demographic history as for trento i do not even know if in trentino they go around and ask everyone about their language in south tyrol they do it every years so there is plenty of linguistic data and on that a map can be drawn as i said i do not know if such data even exists for trento