I worked in a very old manufacturing plant, and as an engineer sometimes had to cover for night supervisors when they were on vacation. This was in the mid to late 90s.

One night I had to find an electrician, and went into one of the remote locker rooms to find him.

The entire room - walls, lockers, door, and even the ceiling, were covered with centerfolds. Even the tables had them glued to it. I was both shocked and impressed at the amount of work that took.

Even then that was not okay, but I wasnt going to be the one to point it out (and get the union guys mad at me). The place went out of business and was torn down years ago.

Funny what we used to think as normal.