<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">North River bluestone</topic></authority><related type="broader"><topic>bluestone</topic></related><variant type="other"><topic>North River blue-stone</topic></variant><variant type="other"><topic>bluestone, North River</topic></variant> <note xml:lang="en"><![CDATA[ A dark bluish gray sandstone quarried on the west side of the Catskill Mountains near the Delaware River (formerly North River) in New York. In the 19th century, North River bluestone was used for sidewalks and curbs. ]]></note></mads>