Those were great, thanks for posting them.
I found it interesting, in a large number of the male portraits, if you hide one half of the face with something, and then look at the other side, there is clearly a shift in expression or focus. In some cases it makes them look a little cross-eyed. In others, it gives quite a different flavor to their expression, change in the shape of the eye, etc.
I presume due to the long exposure times...
And it seems more prevalent in the men’s daguerreotypes than the women’s, for some reason.
Been doing that study of faces for decades. If you apply the method to modern faces, same principle applies. Very rare for the two halves of a face to match, imo.