Source: What is ADHD?
Evidence-based advice on lower back pain
Plan of an Ancient work on the west side of the Great Miami River, in Butler County, Ohio, three miles south west from the town of Hamilton situate on the south East quarter of Section No. 12, Town. 2, Range 2. by Christopher Busta-Peck on Flickr.
A drawing (August 4, 1836) by James McBride.
Used courtesy of the Academy of Natural Sciences of Philadelphia (William Vaux Collection), on permanent loan to the Ohio Historical Society.
Reproduced from Timeline, March-April, 1998.