Here's an illustration of a cartoon stamp on anthrax by Geoffrey Grahn from the New York Times October 13, 2008. It illustrated an editorial by Lawrence M. Wein - "Neither Snow, Nor Rain, Nor Anthrax..."
These type of illustrations interest me. I know of a few others ... Dark Horse Comics uses one on their monthly email, Christopher Bing has done one and Richard Thompson has some on one of the books he illustrated. A cool collection would be to buy up all the originals, hey?