More signs in Amarillo are:

small, large, and OH MY GOD

There are also entire passages from Alice in Wonderland spread across 3 signs near a McDonalds by Westgate Mall.

People request to have these signs places in their yards. The man who does all this is Stanley Marsh 3 (not the third). In order to have a sign placed in your yard, you must live in Amarillo.

I know of one family in Dumas who once lived in Amarillo, and brought their sign with them. It reads, "It's the carnival, not the circus"