In 2006 Kaplan published <i id="mwiA"><a rel="mw:WikiLink" href="./When_the_Astors_Owned_New_York:_Blue_Bloods_and_Grand_Hotels_in_a_Gilded_Age?action=edit&redlink=1" title="When the Astors Owned New York: Blue Bloods and Grand Hotels in a Gilded Age" class="new" typeof="mw:LocalizedAttrs" data-mw-i18n="{"title":{"lang":"x-page","key":"red-link-title","params":["When the Astors Owned New York: Blue Bloods and Grand Hotels in a Gilded Age"]}}" id="mwiQ">When the Astors Owned New York: Blue Bloods and Grand Hotels in a Gilded Age</a></i>, about the <a rel="mw:WikiLink" href="https://en.wikipedia.org/Astor_family" title="Astor family" id="mwjg">Astor family</a> and the <a rel="mw:WikiLink" href="https://en.wikipedia.org/Gilded_Age" title="Gilded Age" id="mwjw">Gilded Age</a>. He also edited several anthologies.
