Sack Attack: After Adjusted, Inclusive Totals, Who Is Dallas Cowboys' All-Team Leader? - FanNation Dallas Cowboys News, Analysis and More
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Dallas Cowboys Harvey Martin's record 23rd sack (1977)
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Pro Football Journal: Harvey Martin's Amazing 1977 Season
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79 days until kickoff - The beautiful Harvey Martin : r/cowboys
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Pro Football Journal: Harvey Martin's Amazing 1977 Season
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Today in Pro Football History: MVP Profile: Harvey Martin, 1977