Back in the early 70's I worked in a shop doing the general sign work mostly. Novembers the boss left for a month and we needed to fill in. I needed to do the sho cards, and Gary, who did the billboards did the shop signs because it was rainy. At the end of the day we were observing and chatting and noticed my cards looked like signs and Gary's signs looked like billboards.It all had to do with margins.