<page_title> 92nd United States Congress </page_title> <section_title> House of Representatives </section_title> <table> <cell> Rogers Morton (R) <col_header> Vacator </col_header> </cell> <cell> Resigned January 29, 1971, after being appointed United States Secretary of the Interior <col_header> Reason for change </col_header> </cell> <cell> William O. Mills (R) <col_header> Successor </col_header> </cell> <cell> May 25, 1971 <col_header> Date of successor's formal installation </col_header> </cell> </table>
In the 92nd United States Congress, Rogers Morton (R) resigned on January 29, 1971 and William O. Mills (R) was appointed on May 25, 1971.