- World Guide to Covered Bridges
The World Guide to Covered Bridges (WGCB) is a
covered bridge numbering system. The system was invented by John Diehl, the chairman of theOhio Covered Bridge Committee . The committee first used the numbering system in1953 to publish a list of covered bridges inOhio .cite web
author = Dr. James E. Reinoehl
title = The Covered Bridge Numbering System
work = Ohio Covered Bridge Homepage
publisher =
date = 1998-05-19
url = http://members.aol.com/jreinhl/maps/numbers.htm
accessdate = 2006-07-07 ]References