Calvin Hartwell (December 17, 1849 – May 19, 1920) was a Republican politician who served as a member of the Pasadena Board of Trustees from 1895 to 1898, Mayor of Pasadena, California from 1896 to 1898, Los Angeles County Assessor from 1906 to 1910, and Los Angeles County Coroner from 1908 to 1920. He was born near Sandusky, Ohio. Following his death on May 19, 1920, Hartwell left his estate, which was worth over $10,000 (equivalent to $327,000 in 2023), to his wife Mary L. Hartwell.^[1]

• "Select Man for Coroner; Calvin Harwell is Favorite Choice". Los Angeles Herald. Los Angeles, California. 27 January 1908. p. 7. Retrieved 9 February 2019.
• "Calvin Hartwell is Elected Coroner". Los Angeles Herald. Los Angeles, California. 28 January 1908. p. 10. Retrieved 9 February 2019.
• "Calvin Hartwell". San Pedro Daily News. San Pedro, California. 15 August 1910. p. 2. Retrieved 9 February 2019.
• "Charge Hartwell Has Ignored Law". Los Angeles Herald. Los Angeles, California. 6 November 1910. p. 7. Retrieved 9 February 2019.
• "Coroner Hartwelll Dies in Pasadena". San Pedro Daily News. San Pedro, California. 20 May 1920. p. 4. Retrieved 9 February 2019.