http://pec.lib.wvu.edu/record/P1511946Ethnology : mixed bloods of the upper Monongahela Valley, West Virginia.Journal article reprint from: <em>Journal of the Washington Academy of Sciences</em>, v.36:no.1 (1946:Jan.). Gilbert, William Harlen.Ethnology--Monongahela River Valley (W. Va. and Pa.)Ethnology--West Virginia.14256