“Signature: Cletus Dempster” – Bill Calder & Charles Montgomery. November 25, 1967. “Signature: Paul Potter” – Bill Calder & Charles Montgomery. December 2, 1967. “Signature: Harlow Hunt” – Bill Calder & Charles Montgomery. December 9, 1967.“Signature: Love” – Bill Calder & Charles Montgomery. December 9, 1967.