<page_title> List of members of the Los Angeles County Board of Supervisors </page_title> <section_title> Since 1885 </section_title> <table> <cell> 1918 <col_header> Year </col_header> </cell> <cell> 1920 <col_header> Year </col_header> </cell> <cell> Prescott F. Cogswell <col_header> 1st District </col_header> </cell> <cell> 1921 <col_header> Year </col_header> </cell> <cell> 1922 <col_header> Year </col_header> </cell> <cell> 1924 <col_header> Year </col_header> </cell> <cell> 1926 <col_header> Year </col_header> </cell> </table>
From 1918 to 1926, Cogswell served on the Los Angeles County Board of Supervisors.