The government of New Zealand, bless them, have made the cash available to put an awful lot of their military heritage online. Not only the NZETC (link on the right), but also the NZ Archives War Art digitalisation project deserve a mention. This is where the header of the blog comes from, by the way.
You can go to the site and search for specifics, e.g. typing in “Bardia” wil find a very nice sketch of the Bardia/El Adem cross-road.
One of my favourites is McIntyre’s “Somewhere on the Lybian Border”, from mid-41. My wife, who is my guide for what is a quality painting, likes it very much too, even though she is not interested in the subject matter at all.