Prescott Franklin Cogswell (October 23, 1859 – January 15, 1960) served in the California legislature for the 33rd District for the 40th and 41st Sessions.

Cogswell was born in Thamesford, Canada West on October 23, 1859.

[2] From 1918 to 1926, Cogswell served on the Los Angeles County Board of Supervisors.

[4] A reservoir on the San Gabriel River was named in his honor.

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