My bookshelf is literally arranged in publication order because I'm a nerd like that. Here's the definitive list of the mainline Tom Clancy Jack Ryan novels, solely authored by him: 'The Hunt for Red October' (1984), 'Patriot Games' (1987), 'The Cardinal of the Kremlin' (1988), 'Clear and Present Danger' (1989), 'The Sum of All Fears' (1991), 'Without Remorse' (1993) - a Clark prequel, 'Debt of Honor' (1994), 'Executive Orders' (1996), 'Rainbow Six' (1998) - Clark spinoff, 'The Bear and the Dragon' (2000), 'Red Rabbit' (2002), 'The Teeth of the Tiger' (2003). After Clancy's passing, the series continued with co-authors, starting with 'Dead or Alive' (2010). The 'Net Force' and 'Op-Center' series are separate licensed properties.