Adena, the historic Worthington home, is located on a commanding range of hills west of Chillicothe. It looks across to Mount Logan, from which the face of the Great Seal of Ohio was designed. It overlooks the Scioto Valley, a terrain favored alike by mound-buiders, the Indians and ourselves. - William Albert Galloway
Mound Builders of Ancient America by Robert Silverberg, page 254
New York Graphic Society, Greenwich, Connecticut, 1968
Old Chillicothe by William Albert Galloway, page 213
The Buckeye Press, Xenia Ohio, 1934