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Television evening newscasts expanded from fifteen minutes to thirty minutes on Labor Day of this year.

  • 1957
  • 1961
  • 1963
  • 1968

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HistoryNet Staff (3/3/2026) Daily Quiz for July 20, 2018. HistoryNet Retrieved from https://historynet.com/quiz180720/.
"Daily Quiz for July 20, 2018."HistoryNet Staff - 3/3/2026, https://historynet.com/quiz180720/
HistoryNet Staff 7/20/2018 Daily Quiz for July 20, 2018., viewed 3/3/2026,<https://historynet.com/quiz180720/>
HistoryNet Staff - Daily Quiz for July 20, 2018. [Internet]. [Accessed 3/3/2026]. Available from: https://historynet.com/quiz180720/
HistoryNet Staff. "Daily Quiz for July 20, 2018." HistoryNet Staff - Accessed 3/3/2026. https://historynet.com/quiz180720/
"Daily Quiz for July 20, 2018." HistoryNet Staff [Online]. Available: https://historynet.com/quiz180720/. [Accessed: 3/3/2026]