Spring '71 [#2] = The Spring '71 MAD SPECIAL;
#3-#10 = MAD SPECIAL;
#11-#14 = MAD SUPER SPECIAL;
#15 = MAD SPECIAL;
#16-#17 = MAD SUPER-SPECIAL;
#18-#20 = MAD SUPER SPECIAL;
#21-#24 = MAD SPECIAL;
#25-#29 = MAD SUPER SPECIAL;
#30 = MAD SPRING '80 SUPER SPECIAL;
#31 = MAD SUMMER 1980 SUPER SPECIAL;
and so on.