New Titans - #60, 61, 65  (that’s where Tim first met Dick)

KnightsEnd (especially Detective Comics #676 and Batman #510)

Prodigal storyline (Dick was Batman here and Dick and Tim also grew closer and acted more like brothers)

Contagion (especially Shadow of the Bat #49 and Detective Comics #696)

Young Justice #22 and Young Justice Secret Origins 80 Page Giant #1

Gotham Knights - #1, 8-11, 26, 33, 34

Nightwing - #6, 25, 46, 64, 68, 69, 110

Batman #455

Detective Comics - #698, 699

Legacy (esp. Batman #533 and Detective Comics #700)

Legends of the Dark Knight #120

War Crimes (esp. Nightwing #97, Batman #631)

Joker: Last Laugh #6

Robin - #0, 8, 10, 11, 12, 32, 33, 47, 48, 74, 76, 118

Red Robin - #1, 4, 11, 12, 13, 14, 15, 19, 22, 23, 26 (Dick is more of a guest character here though)

credits to timdrakequotes