The signature of John Wilkes Booth.
Traced in Adobe Illustrator from http://lcweb2.loc.gov/cgi-bin/query/D?ils:3:./temp/~pp_37Lh::@@@mdb=fsaall,brum,detr,swann,look,gottscho,pan,horyd,genthe,var,cai,cd,hh,yan,lomax,ils,prok,brhc,nclc,matpc,iucpub,tgmi,lamb,hec,krb
John Wilkes Booth