Career
Cogswell was born in Canada. From 1918 to 1926, Cogswell served on the Los Angeles County Board of Supervisors. A reservoir on the San Gabriel River was named in his honor.
Cogswell was born in Canada. From 1918 to 1926, Cogswell served on the Los Angeles County Board of Supervisors. A reservoir on the San Gabriel River was named in his honor.