http://www.user1.netcarrier.com/~lwreber/waterwheel.htm
<http://www.user1.netcarrier.com/%7Elwreber/waterwheel.htm>

"One of the many (some would say the main) reasons Bahr's Mill is
significant is "because of its rare, surviving, millwright-built, wooden
water wheel." The "water wheel documentation project was undertaken with
funding from the Ressler Mill Foundation, [and] was completed during
November and December 1998 by John Bowie Associates (Media, PA) with
technical assistance from Stephen J. Kindig, Molinological Specialist.
The completed project was donated to the Historic American Engineering
Record collection at the Library of Congress, Washington, D.C." (Text
from page one of the drawings.)"