The Foundry book "Small Wars and Skirmishes" has a chapter on Lugard's 1903 campaign, and quite a few line drawings of types, both WAFF and troops from the various emirates. It's only about ten pages out of a 220 page book, though. The other Foundry book "Knights of the Savannah" has something too I fancy, I don't recall exactly how much, though.
Other than that, I got nothing, sorry.