Which ones do we need exactly? Only the DS exclusive maps, or all the maps in CT DS?
I may be able to rip them, though it may take time.
Edit: Although, if I can figure out how to rip them. Desmume has a background viewer tool, but it doesn't show the entire background, just part of it, and it's scrambled. I could do it the old-fashioned printscreening way, but that's going to take time to edit off all the sprites and objects etc.