Source Information

Ancestry.com. Sequent occupance reviewed [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2004.
Original data: Molyneaux, Gary O. A.. Sequent occupance reviewed : the case of Clinton County, Illinois, 1840-1860. Edwardsville, Ill.: Dept. of Earth Sciences, Southern Illinois University Edwardsville Campus, 1973.