The Maj. James W. McMullin House is a historic residence located in Oskaloosa, Iowa, United States. McMullin received his commission in the army during the American Civil War. He returned to Oskaloosa after his service where he established a successful transport and livery business that served Mahaska County's coal industry. McMullin meant for his Queen Anne style home to be a showplace.^[2] It was designed by an unknown architect to be built of brick, but because of price gouging by local brick dealers he chose to have his home built of wood instead.^[2] Structurally, the house has a balloon frame covered with clapboards. It features an asymmetrical plan, a wrap-around porch, and bay windows. The interior is noteworthy for its woodwork and exuberant plasterwork.^[2] It was listed on the National Register of Historic Places in 1985.^[1]