The daguerreotype of Poe on the left was taken in 1847 and the one on the right in late 1848. Notice Poe’s expressions. The first one he still has an air of loving what he does and the fact that he will be a success some day.
The one on the right though not only was taken a couple of days after his one and only suicide attempt (that we know of) and it looks as if all hope and desire to live have gone from his face, he just looks finished and generally exhausted.
I might be the only one who finds this comparison super depressing and sad, but I thought I’d point it out.