Source Information

Ancestry.com. Pioneer families of Randolph and Perry Counties, Illinois [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2004.
Original data: Robertson, Robert Crawford,. Pioneer families of Randolph and Perry Counties, Illinois : notes on the Campbell, Crozier, Flack, Milligan, Steele and Thompson families : the Crawfords of Ballynease, Londonderry, Ireland, with descendants in the U.S.A., and their descendants in the Elsey, Garven, Matthews and Robertson families. Chattanooga, Tenn.: R.C. Robertson, 1960.