Center Square and Hudson–Park
... that the 19th-century Albany, New York, neighborhoods of Center Square and Hudson–Park were unnamed until neighborhood associations were formed in the 20th century?
... that the 19th-century <a href="./Neighborhoods_of_Albany,_New_York" id="mwD_M" rel="mw:WikiLink" title="Neighborhoods of Albany, New York">Albany, New York, neighborhoods</a> of <b id="mwD_Q"><a href="./Center_Square/Hudson–Park_Historic_District" id="mwD_U" rel="mw:WikiLink" title="Center Square/Hudson–Park Historic District">Center Square and Hudson–Park</a></b> were unnamed until <a href="./Neighborhood_association" id="mwD_Y" rel="mw:WikiLink" title="Neighborhood association">neighborhood associations</a> were formed in the 20th century?