↑ Engle, Fred. "From the Atlantic, Bullpasture, Bluegrass, to the Missouri River: James Robert Estill"[1], in Richmond Register 2012.
... Felix and Washington Butler were brothers. Sets of sisters marrying brothers was common in the 19th century. The La Force father was from Clark County, Ky. Felix La Force owned a farm and was feeding cattle with a large conveyor belt, the belt came loose and pulled the motor down from its moorings and killed him instantly. ...
