Oliar, Dotan; Sprigman, Christopher (2008). "There's No Free Laugh (Anymore): The Emergence of Intellectual Property Norms and the Transformation of Stand-Up Comedy". Virginia Law Review. 94 (8): 1848. JSTOR 25470605. Retrieved September 16, 2020. There is also evidence in the [Diller archive…at the Smithsonian in Washington, D.C.] file suggesting that Diller appropriated from other sources [apart from self-creation or using her writing team], including newspaper comic strips and comedy books. For example, a number of Diller's jokes about her dysfunctional marriage to her fictional husband 'Fang' appear to have been inspired by a comic strip, 'The Lockhorns,' that Diller followed obsessively over the course of nearly a decade. The Diller joke files contain hundreds of 'Lockhorns' panels cut out of newspapers and mounted on index cards.

Phyllis Diller Gag File - Drawer No. 49, Part 1