Correction Lines are a unique Prairie solution to a geographical problem. North/south Meridians of Longitude converge as they approach the north pole, so Townships aren't perfectly square. North-South roads have to jog east or west to follow the edge of the next Township. If you kept travelling straight north or south without a jog, you'd drive right through someone's land! To get around this (pardon the pun), the Dominion Land Survey created "Correction Lines" in 1871. These east/west roads occur every four townships, halfway between Baselines. They 'correct' for the curvature of the earth and accommodate travel in a consistent, logical way.
Materials/process: cotton, silk and synthetic fabrics, cotton threads. Paper piecing, applique