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Ohio archæological and historical quarterly (1887)
Ohio State Archaeological and Historical Society · Columbus : Published for the Society by A.H. Smythe · leaf 40
Figure 17. Interior of Kettle Hill Cave, Looking West. (24) … Figure 18. Eastern End of Kettle Hill Cave. (25)History · Archaeology
Internet Archive · Allen County Public Library · Public Domain Mark 1.0. Free to use for anything.
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