Dragon Ball Z: Dragon Box - Seasons (6)

Season 1 (Number of Episodes - 42)
Apr 25, 1989
Raditz Saga, Vegeta Saga and early Namek Saga
Season 2 (Number of Episodes - 42)
Nov 30, -0001
Later Namek Saga, Captain Ginyu Saga and early Frieza Saga
Season 3 (Number of Episodes - 42)
Nov 30, -0001
Later Frieza Saga, Garlic Jr. Saga, Trunks Saga and early Androids Saga
Season 4 (Number of Episodes - 42)
Nov 30, -0001
Later Androids Saga, Imperfect Cell Saga, Perfect Cell Saga and early Cell Games Saga
Season 5 (Number of Episodes - 41)
Nov 30, -0001
Later Cell Games Saga, Other World Saga and Great Saiyaman Saga
Season 6 (Number of Episodes - 41)
Nov 30, -0001
World Tournament Saga, Babidi Saga and Majin Buu Saga