Follow the signs off the main road to the Trading Post and Mining Museum (add in a petting zoo for the animal lovers). The Casa Grande Trading Post, Cerrillos Turquoise Mining Museum & Petting Zoo is located on 17 Waldo St. It's a fun place definitely worth a stop.
The Browns run this rambling place and offer real Cerrillos Turquoise mined from their claim (the main mine has long been closed).
There is a small charge for entrance to their mining museum and, if you wish to feed the animals, there is another small charge.