Another object is to provide a hanger bar and {HEAD ~ display board} having {TAIL ~ cooperating means} for selectively and changably securely and slideably mounting the board on the hanging bar 
Another object is to provide a hanger bar and { HEAD ~ display board } having { TAIL ~ cooperating means } for selectively and changably securely and slideably mounting the board on the hanging bar
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH