Dozens of bus systems plan to participate in the tribute , including those in Buffalo ; Boston ; Cleveland ; Denver ; Memphis ; Montgomery ; Newark ; Philadelphia ; Phoenix ; Pittsburgh ; Portland , Ore. ; San Francisco ; Seattle ; Tulsa , Okla. ; Washington , D.C. ; and Wilmington , Del.
Washington
Seattle
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Buffalo
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Boston
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Cleveland
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Denver
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Memphis
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Montgomery
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Newark
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Philadelphia
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Phoenix
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Pittsburgh
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Portland
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San Francisco
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Seattle
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Tulsa
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Washington
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Wilmington
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Del