[Discover] Underground Railroad Quilt Code http://educ.queensu.ca/~fmc/may2004/Underground.html
(lessons undergroundrailroad quilts ugrr) 
[Discover] Did Quilts Hold Codes to the Underground Railroad? http://news.nationalgeographic.com/news/2004/02/0205_040205_slavequilts.html (quilting)
[Discover] http://www.reallygoodstuff.com/pdfs/154227.pdf http://www.reallygoodstuff.com/pdfs/154227.pdf (quilt railroad underground)
[Discover] Did Quilts Hold Codes to the Underground Railroad? http://news.nationalgeographic.com/news/2004/02/0205_040205_slavequilts.html (quilting)
[Discover] http://www.reallygoodstuff.com/pdfs/154227.pdf http://www.reallygoodstuff.com/pdfs/154227.pdf (quilt railroad underground)