Anderson, Totton J.; Lee, Eugene C. (1 января 1965). "The 1964 Election in California". The Western Political Quarterly. 18 (2): 451–474. doi:10.2307/445290. JSTOR445290.
firestonesrestaurant.com
Archived copy (неопр.). Дата обращения: 16 июня 2015. Архивировано из оригинала 2 июля 2015 года.
Anderson, Totton J.; Lee, Eugene C. (1 января 1965). "The 1964 Election in California". The Western Political Quarterly. 18 (2): 451–474. doi:10.2307/445290. JSTOR445290.
Leonard Kimball Firestone, class of 1931 (неопр.). Princeton University (1996). — «Leonard Firestone died at home in Pebble Beach, Calif., Dec. 24, 1996, of respiratory failure. He was 89. At The Hill School, where he prepared, and at Princeton, he was active in golf and polo. Upon graduation he was employed in sales positions by Firestone Tire & Rubber Co., founded by his father in Akron, Ohio. In 1932, he married Polly Curtis, by whom he had three children. Polly died in 1965. In 1935, Len was appointed sales manager and in 1939 became a director of Firestone. He was named president of Firestone Aviation Products Co. in 1941. He was commissioned in the Navy as a lieutenant, but was assigned to inactive status to become president of Firestone Tire & Rubber Co. of California in 1943. ...» Дата обращения: 27 апреля 2021. Архивировано 3 августа 2020 года.
time.com
TIME (неопр.). Дата обращения: 27 апреля 2021. Архивировано из оригинала 28 октября 2010 года.
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Leonard Kimball Firestone, class of 1931 (неопр.). Princeton University (1996). — «Leonard Firestone died at home in Pebble Beach, Calif., Dec. 24, 1996, of respiratory failure. He was 89. At The Hill School, where he prepared, and at Princeton, he was active in golf and polo. Upon graduation he was employed in sales positions by Firestone Tire & Rubber Co., founded by his father in Akron, Ohio. In 1932, he married Polly Curtis, by whom he had three children. Polly died in 1965. In 1935, Len was appointed sales manager and in 1939 became a director of Firestone. He was named president of Firestone Aviation Products Co. in 1941. He was commissioned in the Navy as a lieutenant, but was assigned to inactive status to become president of Firestone Tire & Rubber Co. of California in 1943. ...» Дата обращения: 27 апреля 2021. Архивировано 3 августа 2020 года.
TIME (неопр.). Дата обращения: 27 апреля 2021. Архивировано из оригинала 28 октября 2010 года.