http://tobaccodocuments.org/rjr/500581042-1063.html
Rjr. "Advertising Research Report. Mrd#Ar-67-25. Salem 100's 'Extra Time #2': 60 on-Air Test.". 28 Aug 1967. Bates: 500581042-500581063. http://tobaccodocuments.org/rjr/500581042-1063.html