<https://mapcollections.brooklynhistory.org/collection/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mapcollections.brooklynhistory.org/collection/?place=east-river-n-y__AND__buttermilk-channel-new-york-n-y__AND__upper-bay-n-y-and-n-j__AND__brooklyn-new-york-n-y__AND__bay-ridge-new-york-n-y&subject=harbors&genre=map&century=19th-century>