@rogercooper That will give him either the base map image or the relief map image, not the actual view of the map. Besides, this is practically map-making: I understand here we have a user rather than a map-maker.
Start TripleA. Select a Game: The Rising Sun. Start Local Game. Play. View/Show Units: off. Export/Export Gameboard Picture.Unfortunately, this will also write the game name and the current round on the upper-left corner of the map. There is a way to avoid this, but it requires modifying a file in the map folder.
So I don't believe there is currently a way for a user to get a clean map image, but my steps should almost do that.
I don't think there is a picture of this map stored anywhere accessible and don't think anyone has any ideas about copyrights or where the map-maker in question is, but I'm fairly certain nobody is going to sue you...