amusement park art

Does any coaster people know any expert in amusement park art.I some lithograph paintings signed but the artist and numbered . Robert

I am not sure what you are trying to say here.

The words appear to be English, but...

Wait, I got this.
Wait... no I don't...

If you are wondering if anyone knows the value of some coaster lithographs, I would honestly look them up online or take them to an art dealer or something to get them appraised.