Franz Xaver Messerschmidt (1736 - 1783) was a German sculptor most famous for his "character heads", a collection of busts of faces contorted in extreme facial expressions.
Article found here:
http://en.wikipedia.org/wiki/Franz_Xavier_Messerschmidt Yesterday I brought home the catalogue book of his works from the library, and I scanned most of them. The .zip is available for download here:
http://www.megaupload.com/?d=51D818XZ At 300 DPI, these are print quality, and all cropped for standard letter size. I recommend them for any artist interested in portraiture.
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