Small, Medium, Large & EXTRA LARGE typography! Wow!!
I spent my design education really admiring Why Not Associates, their print work and books really were an inspiration. Quite a unique style which has often been copied but never executed with the same degree of skill. I had put them to the back of my mind until this week when I was going through my book library for research material.
I have put the locations of their environmental designs to the top of my list of places to visit.