I want to give this five stars but when you spend ~800+ pages on 10 years alone and just basically glance over the 70s, 80s, and 90s, it makes me give you less stars. I get that the 1960s were a momentous time in US history but to spend roughly 80% of the book on then when its supposed to be a book about the 1960s to the end of the 1990sish just not cool. 
 Other than that major gripe, I really enjoyed catching up with characters, though it was hard to remember because it was over a year and. half since I read winter of the worlds. 
 Also, a better diagram of how people are connected (even to the first generation) would have been nice.