the first concrete barn in the United States
... that after building the first concrete barn in the United States on his farm in Chappaqua, New York, Horace Greeley said it would be "abidingly useful long after I shall have been utterly forgotten"?
... that after building <b id="mwDN8"><a href="./Rehoboth_(Chappaqua,_New_York)" id="mwDOA" rel="mw:WikiLink" title="Rehoboth (Chappaqua, New York)">the first concrete barn in the United States</a></b> <i id="mwDOE">(pictured)</i> on his farm in <a href="./Chappaqua,_New_York" id="mwDOI" rel="mw:WikiLink" title="Chappaqua, New York">Chappaqua, New York</a>, <a href="./Horace_Greeley" id="mwDOM" rel="mw:WikiLink" title="Horace Greeley">Horace Greeley</a> said it would be "abidingly useful long after I shall have been utterly forgotten"?