Also, Carolyn's birth year was given as 1946 which means the character was meant to be 19 or so when the series began.
October 16, 1946 was her birthday *that* week.
But during the first week of eps were led to believe Carolyn was 17, meaning she was born in about 1949. And in June of '68 we're told her birthday is December 8, 1948 (by having Carolyn see her own gravestone at the culmination of her dream in the Dream Curse), which is still very close to 1949 and which would still make her 17 in July of 1966. As Gerard so astutely observed, the birth records office in the Collinsport county courthouse must be a real mess. Not only can't they keep the years straight - they can't even keep the months and days straight!
Liz was born in 1917 so she was supposed to be fifty in the Summer of '67.
Actually, I wonder what they were thinking with the listings in that book because those eps all aired in July, yet Liz writes the month/day of her death as April 10th.
And that's the only time in DS history when a month that's somehow referenced on the show doesn't correspond to the month an ep actually aired.