and Margaret (Craig) Boyd House, is a historic building located in Mount Vernon, Iowa, United States.

They added a large brick addition onto the north side of the house in 1875–1876.

The two-story side-gabled structure features mid-19th century stylistic influences.

Smith opened the first livery stable in Mount Vernon and became quite wealthy because of it and his land holdings.

This article about a property in Linn County, Iowa on the National Register of Historic Places is a stub.