Ghost Signs and Art

About four years ago, I did a post about attending an open house event in a new Arizona State University Art Space in downtown Phoenix.  They had acquired an old warehouse and created some innovative artist spaces inside.  The outside of the old warehouse building has a number of ghosts signs on it.  At the very top I can make out the word "Southwest" but, I'm not sure about the rest of that line.  It might say "Cotton".  The sign below it about Machinery Repair looks like it might be new but, that phone number proves that wrong.  There haven't been phone numbers like that in many, many years.

At ground level is this piece of art that looks a bit scary.  It's been on the side of the building for many years, long before any of the recent ASU students arrived.  Someone told me that it's called "Decompression" and depicts how the skull might be opened to relieve pressure on the brain after a traumatic brain injury.  There is no sign to give further explanation or to identify an artist.