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Ask Sam Farmer: Are there throwback uniforms for NFL officials? - Los Angeles Times
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NFL makes history with all-Black officiating crew for MNF
Johnny Grier, N.F.L.'s First Black Referee, Dies at 74 - The New York Times
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WilliamPennmanship: Report: N.F.L. referee lockout centered around tighter shirts for Ed Hochuli
Super Bowl 56: Mom of Rams coach, referee have ties to Evansville
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NFL hires first Black female game official, Maia Chaka
Fashion statement: NFL refs to sport new uniforms
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Upstate NY native Maia Chaka makes history as NFL's first Black female referee - syracuse.com
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