THIS 1991 MACK CALENDAR IS FROM MACK INTERNATIONAL ALLENTOWN, PA.  EXCELLENT UNUSED-UNHUNG  CONDITION.  VERY GOOD COLOR, NO MARKINGS, TEARS, CREASES (JUST A SMALL BOTTOM LEFT DING)   MEASURES  13 1/8 x 11 7/16" CLOSED AND 13 1/8 x 21" OPENED.    ANY QUESTIONS  PLEASE ASK.