Jones Brothers Mule Barn, also known as Cassingham & Son Hardware Store, is a historic mule barn located at Warrensburg, Johnson County, Missouri. It was built in 1912, and consists of a two-story main block with a monitor roof and one-story rear ell. It is constructed of red brick and sits on a stone foundation. It was built as mule sales barn, and later served as a hardware store. It was listed on the National Register of Historic Places in 2010.