Bibliography
•
http://www.nationalgeographic.com/railroad/
j2.html
www.scrollpublishing.com/store/media/Quaker.jpg
http://www.shunpiking.com/bhs2007/image/shadd.jpg
http://www.nationalgeographic.com/railroad/i
mages/hall-of-fame_05_04.gif
http://www.whitepinepictures.com/seeds/i/5/
