In the above thread I mention I had an old map of the Carranza Memorial and I still have not found it. However, I did find this. Take notice the Carranza Monument is mentioned on October 9 1930. If you look at various sites online they have it being built anywhere from 1931 to 1933 but we know that in 1930 this map shows it. There is a possibility that it wasn't finished when this map was drawn.