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Lupyak, Edward, and Historic American Engineering Record. Bridge Comparison: Little Pigeon River Bridge, Townsend Wye Bridge, Sinks Bridge, Cataloochee Creek Bridge. Library of Congress Prints and Photographs Division: Historic American Engineering Record, 1996.
Lupyak, Edward, and Historic American Engineering Record. Design Principles - Great Smoky Mountains National Park Roads & Bridges. Library of Congress Prints and Photographs Division: Historic American Engineering Record, 1996.