http://pec.lib.wvu.edu/record/P47141951Archeological problems in the Upper Ohio Valley.Journal article reprint from: <em>Pennsylvania Archaeologist Bulletin</em>, v.21:no.3/4 (1951:July/Dec.).<br />Mayer-Oakes, William J., 1923-Ohio River Valley--Antiquities.Archaeology--Ohio River Valley.14256