Truly fascinating! I never thought about it before, but it really makes sense that there are so many types of bricks, potential designs and ways to configure mortar!
Is moose working on his brick house or some new brick art? ;^)
I like the recessed mortar type. It allows people to climb a building like a rock climber (aka my freshman year roommate, Dave McDonough).
some would say that Dave was a brickhead. I thought he was funny.