Death Masks:
In roughly bottom-to-top, left-to-right order, the faces in this photo belong to:
On the ledge: Abraham Lincoln, Laurence Barrett, Sir Richard Owen, Robert E. Lee, John C. Calhoun, William Tecumseh Sherman
The bottom six hanging on the wall: Ludwig van Beethoven, Antonio Canova, John Keats, Hyrum Smith, Joseph Smith, Jean-Paul Marat
The next highest six: Franz Liszt, Napoleon Bonaparte (well, maybe), Frederick the Great, George Washington, William Blake, Oliver Cromwell
The next highest five: Jeremy Bentham, Aaron Burr, Friedrich Nietzsche, Edward Kean, Ulysses S. Grant
And the top row: Jonathan Swift, Maria Malibran, David Garrick, Thomas Paine, and Thomas Moore.