These are some mini gouache paintings of the big 4. Do you know who the big four are? They helped to found the Central Pacific Railroad that brought lots of riches to San Francisco, now many things are named after them. I bet you will think their names are familiar once I tell them to you. Left to right (Leland Stanford, Charles Crocker, Collis P. Huntington, and Mark Hopkins). Pretty cool, read more. I feel sorry for Theodore Judah who called them together. Why not the BIG 5?