A while ago I put the call out to try and find a map we could put on the wall of our boat to keep track of our travels. The one we have is way too large for this purpose. I finally got around to looking at those suggested and we thought this one from Ali's comment (copy below) would suit fine. We still have the large one if we need more detail but for marking where we've been the Principal Inland Navigations map will do the trick.
I ordered the map, asking for it to be sent to our friend in the UK so we wouldn't have to pack it in our suitcases in a few weeks time. Today I received an email saying my transaction had been flagged as potentially fraudulent - because the delivery address was in a different country to the billing address, our billing address is a PO box, and they couldn't find anything about us by searching the internet. So.... I've referred Neil back to this blog and this entry is for him!
We have a Lockmaster Map, Principal Inland Navigations on our wall, it gives a good overview of the system, but might be a bit small for what you want. Have a look at http://www.canalshop.co.uk/acatalog/lockother.html