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Last player to wear No. 42 for each MLB team
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Colorado Rockies to Honor Larry Walker With Number Retirement
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Knocking History out of the Park, Alumni Association
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Taking names, retiring numbers matter of time – The Denver Post
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Rockies retire Jackie Robinson's 42 in 1997
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MLB celebrates Jackie Robinson Day every year on April 15
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Matted 8x10 Photo- Jackie Robinson Batting
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Major League Baseball celebrates Jackie Robinson Day – The Denver Post
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Last player to wear No. 42 for each MLB team
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Mariners Game #15 Preview, Colorado at Seattle: Jackie Robinson Day - Lookout Landing