The first two pictures were allegedly taken less than 8 years apart? It seems impossible that's the same person.
I don’t believe it’s him but could be wrong, the nose looks wrong, too bad there’s not more shadow on the first photo to give more detail ...
One physical feature that does not change with age is the distance between pupils. If you superimpose the Kaplan daguerrotype and the dagerreotype you've called "Meserve #1," so the the eyes fit, none of the other features of the face do.
Of course, your use of measurements is quite effective as well.
Look at the ear set in the first picture. The ears are set much lower in relation to the rest of the face compared to the other two. The lobes are also tighter on the face and the angle of the ears is slightly more horizontal. There also seems to be a more pronounced brow ridge in the last two pictures. I’m not buying it.
Correct. Not Lincoln. Note where the lines cross the ears, at a different point in each one. Ear shape doesn’t change or rise or fall through life.