Thomas-Spelling Productions was a television production company formed by comedian Danny Thomas and producer Aaron Spelling on April 15, 1966 as a partnership with 24 properties. Thomas continued his existing partnership, T&L Productions, with Sheldon Leonard. The company adapted its name by July 18, 1966 when it announced the financial involvement of ABC with its first show, "Range" (later "Rango"), a half-hour comedy western starring Tim Conway and its rented space on Desilu Productions' Gower lot. ABC also picked up another show for a pilot, just in an outline treatment, in "The Guns of Will Sonnett". Thomas-Spelling Productions' active operations ended with the last season of "The Mod Squad" in 1972. Spelling formed a new partnership with Leonard Goldberg, Spelling-Goldberg Productions.