I stumbled upon the lovely artwork of Walter Trier while windows-shopping on e-bay several months ago (these images are from e-bay listings, yeah, I know, I should go get crisper images from websites). Trier, a Prague-born German who emigrated to England in 1936, provided the cover art for the first 147 issues (!) of the British magazine Lilliput, each of which featured a male and female couple and a dog (The later, non-Trier covers for the magazine are pretty nifty, as well).
I'd love a book of all his Lilliput covers, wouldn't you?
Walter Trier homepage (in German)