Rockstar has released high-definition maps for Grand Theft Auto: Liberty City Stories and Grand Theft Auto: Vice City Stories.
Both games are now available to download on the PlayStation Store as PS2 Classics, and act as companion titles to GTA III and Vice City. They were originally released on the PSP before being ported to PS2 shortly after.
Check out the maps below, and be sure to click the image to see the full size. After that, simply right click and get downloading!