Minecraft wiki entry for Stone_Bricks, associated text: First view of the stone bricks that Jeb posted.
First view of the stone bricks that Notch posted.
Naturally occurring stone bricks - regular, cracked, and mossy - in a stronghold.
An image from Beta 1.8 Pre-release.
Chiseled stone bricks, as revealed in the 1.2 pre-release.