This image was acquired from
wikimedia. 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:
APRR manhole cover. Extant manhole cover from the Anacostia and Potomac River Railroad Company at th Street SE Washington DC Transferred from org en transferred to Commons by User Grenavitar using de php CommonsHelper taken original upload date Photo by David Cranorbr uploader was Volcycle at org en Released into