There’s a web page set up by Dave Chapeskie (dchapes@ddm.wox.org) which has many IFM maps in source and PostScript format, at
At the moment it contains maps of a few Infocom and Inform games. Some are complete, others not quite. A few have tasks set up so that a walkthrough can be made. The site hasn’t been updated for a while.
Another site containing some IFM maps can be found at: