This image was acquired from
wikimedia and flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
smithsonian institution smithsonianinstitution usps clerk baltimore amp ohio baltimoreohio train railway post office railwaypostoffice mail train car traincar bag catcher bagcatcher ohio railway train mail trainmail mail exchan mailexchan man suit national postal museum nationalpostalmuseum clerestory coach us stock clerestorycoachusstock