Armstrong-Whitworth Argosy

Part of the trend to twin boom cargo planes in the 1950s, the four engine Argosy was the last aircraft produced by Armstrong Whitworth and was the result of a 1955 military request for a cargo aircraft capable of carrying 25,000 lbs with a range of 2000 miles with a 10,000 payload.  Seventy four were produced from 1959 to 1964 and the last one was retired in 1991. According to Wikipedia, 6 remain.