Filmation, headed by Lou Scheimer and Norm Prescott, was another television animation studio that arose in the 1960s. Filmation was most famous for its acquisition of licenses to produce animated series based on other media; it was one of the few companies to keep all of its animation within the United States and did not use the aesthetics of limited animation preferred by Hanna-Barbera and UPA; instead, Filmation productions relied on heavy usage of stock footage, rotoscoping, limited voice casts (Scheimer himself provided many voices) and a balance of licensed animated series with lower-budget, live-action ones (such as "The Ghost Busters" and "Uncle Croc's Block") to stay financially solvent. After a string of success lasting well into the 1980s, Filmation dissolved in 1989.