1973 Pat Boone Trip To Bethlehem Signed Boone Family Over 500 Names

This is a large hand designed poster with Pat Boone and family "Trip Star Of Bethlehem,has the boone family signature,Pat Boone,Shirley,Lundy,Debby & Cherry,also there's over 500 or more names signed,I bought this at an estate sale about 25 or 30 years ago,I don't know who the people on this poster just know it's the Boone family with a bible scripture Gal. 5:22,anybody has any information or know about this trip please share.