Tom Clancy: What is the only Tom Clancy novel to take place entirely before 1980?

Questions

In 1982 1st permanent artificial ---------- successfully implanted (U of Utah) in retired dentist Barney Clark; lived 112 days with the Jarvic-7 heart. ?

In 1986 Desi ---------- actor (Ricky Ricardo-I Love Lucy), dies at 69. ?

In 1988 "Naked Gun" premieres, a movie based on TV's "---------- Squad". ?

In 1990 1st parlimentary election in newly reunified---------- . ?

In 1368 Charles VI [the Well-Beloved], king of ---------- (1380-1422), born. ?