Interestingly, there's only one big image per agent :

-> http://clippy.js.s3.amazonaws.com/Agents/Clippy/map.png

-> http://clippy.js.s3.amazonaws.com/Agents/Links/map.png

-> http://clippy.js.s3.amazonaws.com/Agents/Merlin/map.png

-> http://clippy.js.s3.amazonaws.com/Agents/Rover/map.png