I was taking a look at what was coming up for the Campaign Cartographer Annual 2009, and found out that it is strip maps.
A strip map is essentially a map of what lies between points A and B - mostly along a single road, river, or canal. They used to be very, very common, and most of the maps that I have seen of the old canal system that used to criss cross much of England were done that way.
You know, I have never used strip maps in game, and the big question I have to ask myself is 'Why haven't I?' If the group is not likely to go off of the area between points A and B then why not just have a map that starts at 'The Inn of Convenience' and crosses the 'Ferry's Tail' and ends at the 'City of Destination' rather than a full page map that will for the most part never see use?
For some reason it just made so much sense! And is perfectly suited to a steampunk campaign, where those are the exact type of maps in most guide books for civilized lands. It felt like a revelation. They will also fit conveniently as a sidebar on the page describing the area.
Incidentally, the Cartographer's Annual is one of the best gaming purchases that I have ever made - I have had my subscription for three years, and will likely continue for as long as they are released.
The Auld Grump, who has a love of maps and mapping software.
*EDIT* Doh! I forgot to mention what the Annual is for. Campaign Cartographer 3, by Profantasy Software. Better, prettier, and easier to use than CC2.