I just came across this great caricature of Charles Dickens and William Thackeray so I thought I'd share.
The book it's from is called the Amenities of Book-collecting which is by Alfred Newton, who died in 1940. The picture is possibly also by Mr. Newton - you can make out Alfred in the signature but the surname isn't clear.
Having recently been exposed to the virtues of Vanity Fair caricatures, this one jumped out at me.
Great isn't it!