@article {12155,
	title = {Bridge Comparison: Chimneys Bridge, Elkmont Vehicle Bridge, Crossover Bridge at Perry{\textquoteright}s Dam},
	year = {1996},
	publisher = {Historic American Engineering Record},
	type = {Drawing},
	address = {Library of Congress Prints and Photographs Division},
	keywords = {Bridges},
	url = {http://www.loc.gov/pictures/collection/hh/item/tn0275.sheet.00010a/},
	author = {Young, Karen and Historic American Engineering Record}
}
@article {12152,
	title = {Evolution of Major Roads - Great Smoky Mountains National Park Roads \& Bridges},
	year = {1996},
	publisher = {Historic American Engineering Record},
	type = {Drawing},
	address = {Library of Congress Prints and Photographs Division},
	keywords = {History, Maps, Roads},
	url = {http://www.loc.gov/pictures/collection/hh/item/tn0275.sheet.00003a/},
	author = {Young, Karen and Historic American Engineering Record}
}
