I'm not trying to be a copyright nazi but my personal advice is not to bother. If it inspires you - get a graphics program and create the icons\symbols that it inspires. I wouldn't try and lift the actual elements from these maps. For one thing, they're too small.
This is not a criticism of the map by the way, or its sister. Beautiful maps but more beautiful overall than in any of its pieces. In order to mechanically separate out any of the pieces you'd want a very high resolution image and careful cutting. The parts look too well integrated -- there are better components available for less work.
I think you'd have better success quickly by going to the dundjinni forums and look for pngs to adapt or use.
All of these will give you cleaner elements with less work and more artistic freedom than copying out of small scan from a published map. It may seem like a longer path to the map pieces you want but its actually more rewarding and helpful if you investigate the components or concentrate on drawing them yourself.