Originally Posted by trupeach
The book Underground Railroad Sampler Quilt (I wish I owned it) is suppose to be great. Hidden in Plain View is a book about the underground RR and in the back it has what block was used for what code. Reproduction Quilts has a pattern The Freedom Quilt C1850 inspired by the ides that quilts were used by the underground RR. I check for you it is still in print and costs $9. www.reproductionquilts.com
Hope this helped, I live and breath the Civil War and the years leading up to it.
I have this book(the first one) and it's great! It tells the stories and has blocks from that era in it.