RAC Canadian Railway Atlas
The Railway Association of Canada produces maps and atlases of Canadian (and North American) rail lines; I’ve got a 1999 edition of a single-sheet map that covers all Canadian and major U.S. tracks. Some of their maps are available online as small PDF files, as part of a web site about proximity issues co-sponsored by the RAC and the Federation of Canadian Municipalities. That explains the city railway maps, in addition to the provincial maps. Fascinating stuff for me, especially since I’m trying to keep track of where all the track is, and who (and where) all the new short lines are. Via CPSIG.