Soule Steam Feed Works became a non-profit corporation founded in 2002. The museum is listed on the National Register of Historic places since 1979. It is also a Mississippi Landmark since the fall of 2003. The museum is also an Official State Historical Industrial Museum in July 2004. By 1922, the Soule Spee-D-Twin, a two-cylinder reciprocating steam engine, became a favorite feed engine among saw mill operators. Over George Soule's lengthy career, he held over 25 U.S. patents.