This image was acquired from
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 mailbox us mail usmail rural free delivery ruralfreedelivery rfd national postal museum nationalpostalmuseum train locomotive vehicle steam engine blackandwhite monochrome bike tractor black and white Date c. Object number A. Medium paper photoemulsion Dimensions Unframed Description