Photographer is
Peoria Portrait and View Co.
Mathis & Clark Proprietors
410 Second Avenue
Peoria, Illinois

This photo and the one listed as #11 seem to be taken at the same location.  Note that they were not taken in a studio, but seem to be outdoors with a tarp or cloth used as a background.  Notice the wood near the gentlemens foot and what could be a woodpile to the left of his foot.