"L. W. Kirkpatrick, Agent - Mich. Cent. R.R." according to the hand written index in the 'Kirkpatrick Family Album' from which this photo was retrieved. Mr. Kirkpatrick is shown in his full uniform and holds a railroad lantern in his hand.
Orginal photo is a Tin type 

5x7 glossy copy 
image enhanced for best quality printprofessionally printed on #100 matte