These maps are scanned from a personal collection built up by Richard Fairhurst, the result of several years' scavenging in second-hand bookshops! Some are canvas, some folded paper, some flat; some are the New Popular Edition proper, but a few are War Office editions. These are scans of real, used documents, not a pristine 'for the record' collection.
Please note that this was designed as the licence for the scans that the tiles have been derived from. It needs rewording to exactly match what you would want to do with the tiles. As the tile were derived from the maps, they are covered by the same licence.
This document must be read in conjunction with the Creative Commons Attribution-NonCommercial Licence 2.5 as detailed below.
For the purpose of this document, you should note the following distinction:
The scanned images are licensed under the Creative Commons Attribution-NonCommercial Licence 2.5. You should read the full licence here. It is summarised in this 'human-readable' document.
This forbids you from reproducing the scans for commercial purposes ("any manner that is primarily intended for or directed toward commercial advantage or private monetary compensation") without the permission of the copyright holder.
For the avoidance of doubt, any provisions in the Creative Commons licence referring to "Derivative Work" do not apply to tracings (whether manual or automated), optical character recognition, or other representations of the geographic facts expressed on the maps. They apply to the scanned images and other images derived from them.
As stated above, you are free to trace or otherwise derive geographical information from the maps, and to distribute the resulting product as you wish.
You are very strongly encouraged to place any tracings you make in the public domain, so that others can benefit.
If you would like to negotiate other uses with the copyright holder, please e-mail Richard Fairhurst at richard@systemeD.net.