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Keywords from Image Description:
Transcontinental RR c. Transcontinental railroad issue es Timbre postal estadunidense del ferrocarril transcontinental emitido en con valor de centavos Ntese que la bandera el humo van en direcciones opuestas Post Officebr scan of postage stamp by Gwillhickers Bureau of Engraving and Printing TranscontinentalRRc PDUSGov First