<?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">Union cases</topic></authority><related type="broader"><topic>document containers</topic></related><related type="broader"><topic>cases</topic></related><variant type="other"><topic>Union case</topic></variant><variant type="other"><topic>cases, Union</topic></variant><variant type="other"><topic>daguerreotype case</topic></variant><variant type="other"><topic>daguerreotype photograph case</topic></variant><variant type="other"><topic>union cases</topic></variant> <note xml:lang="en"><![CDATA[ Cases designed to hold portrait photographs, usually daguerreotypes or ambrotypes. The case was customarily made of leather or another material, hinged, opening like a book, with velvet or another covering applied to the interior surface facing the image, and the outside surfaces decorated with relief designs. The design was patented in the United States by Samuel Peck in 1854. ]]></note></mads>