 SPOILER: Near the end of the movie there is a tribute to  _Treasure of the Sierra Madre, The (1948)_ (qv). Butch and Sundance  are "caught" by a kid in the village who recognizes the brand on the  rump of the gray mule that they have taken. The brand the kid sees  is exactly the same as the brand that a kid in "Treasure" sees on  seemingly the same gray mule and then runs to seemingly the same  police station to report the theft.