I have inherited these three paintings from my grandmother who retired in Mexico. She might have purchased these three painting in Mexico or in California, where she was fromt before retirement. The paintings look like they are from the 1970's but I'm not sure.

There is one large painting, and two skinny paintings of equal dimension, but one goes tall-ways and the other side-ways (based on the position of their signatures). The two skinny paintings look abstract, but the large one in the middle looks like an abstract illustration of skyscrapers with a tree and water in front.

I have included a picture of the paintings (sorry they are in bubble wrap) and the artist's signature too. I can't seem to read the signature well enough to identify the artist's name.

Does anyone know who the artist is? Or anything else about these paintings?

Thanks!