Adolph von Menzel drew his brother Richard in 1848. One of his hands lies flat on a table, the other is closed, with his face resting against it. He has just combed his hair. His eyes are far away in thought. He is patient with his brother's request to hold still for a little while. Richard would have been accustomed to his brother drawing all the time.
Here is Richard again in 1860. He sits sideways on a chair, facing away, with his neck tie sticking out on one side and his hair on the other. He has grown a big mustache and the hair on top is thinner. His cheek seems a bit hollow.
The third drawing shows Richard on his deathbed in 1865, just five years later. His hair is mostly gone now, his features are sharper, and there is a heavy growth of beard. His eyes are closed and sunken in death. The lines describing the white fringe of cloth move like a seismograph.