The photographer was located in Spencer, Iowa, so presumably the subject lived in that area. The bulk of the photographs and letters (mostly in German) in the box appear to have been sent between 1880 and 1920 to the Frederick and Augusta Voss family which moved to Cleveland, Ohio, in 1882 from Ritzerow (near Stavenhagen) in Mecklenberg-Schwerin, Prussia. None of the letters nor other photos in the box have any reference to Spencer, Iowa, and I am utterly clueless as to who this young man may be.
Do you have any clues?