Minecraft wiki entry for Infdev_20100327_to_Beta_1.7.3, associated text: The Farther Lands in Beta 1.7.3.
A captioned diagram.
The Corner Farther Lands in Beta 1.7.3.
A captioned diagram.
The Corner Farther Lands With a RePeated Pattern.
The Farther Lands showing all its layers.
From the left of the red line, the Edge Far Lands start to combine with the Edge Farther Lands, creating a hybrid mix.