Oliver P. Morton's signature.
Own work by uploader, traced in Adobe Illustrator from http://images.indianahistory.org/cdm4/item_viewer.php?CISOROOT=/dc008&amp;CISOPTR=582&amp;DMSCALE=25&amp;DMWIDTH=600&amp;DMHEIGHT=600&amp;DMX=72&amp;DMY=413&amp;DMMODE=viewer&amp;DMTEXT=%20Johnson&amp;REC=15&amp;DMTHUMB=1&amp;DMROTATE=0
Connormah, Oliver P. Morton