I found another error. This is a phrase from chapter 19:
“As he smoked his pre-embargo Montecristo,”
This is from a scene that occurs in October, 1959. But the Cuba embargo wasn’t signed by Kennedy until October of 1960. So version 2 of The Smart Kid will read:
“As he smoked his Cuban Montecristo,”

Montecristo (Spanish pronunciation: [monteˈkɾisto]) is the name of two brands of premium cigars, one produced in Cuba for Habanos SA, the Cuban state-owned tobacco company, and the other produced in La Romana, Dominican Republic for the Franco-Spanish tobacco monopoly Altadis SA, a division of Imperial Tobacco.

—https://en.wikipedia.org/wiki/Montecristo_(cigar)