Among the most frequently appearing business associates of the Ewing family are oil cartel members Jordan Lee (Don Starr, seasons 2–14), Marilee Stone (Fern Fitzgerald, seasons 2–13) and Andy Bradley (Paul Sorensen, seasons 2–10); Jock's good friend Marvin "Punk" Anderson (Morgan Woodward, seasons 4–11); Shady investment banker Vaughn Leland (Dennis Patrick seasons 3, 5, 7–8) and original WestStar Oil frontman Jeremy Wendell (William Smithers, seasons 4–5, 8–12). Other long-time Ewing acquaintances include Dallas PD detective Harry McSween, serving as J.R.'s source within police force (James Brown, seasons 2–12); family attorney Harv Smithfield (George O. Petrie, seasons 3–14); and Donna's stepson, U.S. Senator Dave Culver (Tom Fuccello, seasons 3–6, 8, 10–11 and 13–14).