Callan (1967)
Season 1
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1967 • 7 Episodes
Season 1 of Callan premiered on February 6, 1967
Season 2
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1969 • 15 Episodes
Season 2 of Callan premiered on January 8, 1969
Season 3
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1970 • 9 Episodes
Season 3 of Callan premiered on April 8, 1970
Season 4
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1972 • 13 Episodes
Season 4 of Callan premiered on March 1, 1972