Wilson subsequently played occasional leading roles in features, as in Robert Aldrich's violent, grim-humored kidnapping drama, "The Grissom Gang" (1971), which recalled Wilson's part in "In Cold Blood" more than a little. One of his more intriguing credits came with the first US-Polish co-production, Krzysztof Zanussi's acclaimed "The Year of the Quiet Sun" (1984), a love story between an American GI who doesn't speak Polish and a Polish woman who knows no English. Another interesting co-production, the US-Spanish "On the Line", came out that same year, with Wilson as one of two border guards who both become involved with a Mexican prostitute. For the most part, though, Wilson has played a wide variety of supporting roles, from George Wilson in "The Great Gatsby" (1974) to Governor Lew Wallace in "Young Guns II" (1990) and Elvis Presley's father in the TV biopic "Elvis and the Colonel: The Untold Story" (1993).