Donna McComas is chairperson of the 2015 Challenge for the Georgia Friendship Quilters Guild. She has prepared the following guidelines for participation in the challenge.
2015 Challenge Guidelines
Here is a document containing links to internet resources for the Underground Railroad and blocks.
Here are documents containing blocks in sizes 6, 8, 10 and 12 inches. Rotary cutting dimensions are included as well as templates for blocks containing curved pieces.
4 inch blocks
6 inch blocks
8 inch blocks
10 inch blocks
12 inch blocks
Carpenter's Wheel -- half square triangle layout
Take up the challenge!