Smithsonian!
A few months back my good friend Ryan Butterworth showed me that the Smithsonian had released scanned 3D models from some their collection. Some are super cool!
Check out what I did with good 'ol Abe Lincolns life mask! Rendered out at 6k x 4k - he would be so proud.
Base model via Smithsonian, mesh cleanup in Zbrush and all else in C4D.