Lockridge Medical Clinic in Whitefish, Montana, was a Frank Lloyd Wright-designed building commissioned in 1958 by physician Thaddeus Leon Lockridge and opened in 1960 after Wright's death. One of only three Wright designs in Montana, it adapted Usonian ideas on a four-foot grid and stood out for a large illuminated plastic sphere in its facade and rooftop gardens. After Lockridge died, the building passed from medical use to banking, offices, and later a law firm, whose owners pursued restoration. Listed on the National Register of Historic Places in 2012, it became the center of a failed preservation fight and was demolished in 2018, drawing national criticism.