Thank you so much for updating us, Gail, on the subject of this photograph. I suppose we were right first time, then, that the object in his hand is a telescope, and perhaps the box contains navigational instruments? The dividers would fit with this, wouldn't they.
It is sad to hear of his death at such a very young age of tuberculosis, I suppose this picture was taken comparatively soon before his death.
You're very lucky to have the letters and how fascinating they must be to read, and to be able to see the face of the man who wrote them. 38 letters AND all these fabulous photos. Gosh.

I showed the picture to my daughter and her first comment was about the modernity of his face, and we then pondered on how we all seem to forget that people in earlier times were indeed just like us. I'm sure his family were devastated to lose him.