Here is the famed Apache Express train. The train rode around the center court of the mall from the 60's all the way through the 1990's, and is a perfect example of one of the features that made Apache Plaza special for families, particularly for kids.
This first picture is from 1993 (courtesy of Apache Plaza).
This next photo is from one of the mall's famous Easter weekends. Many thanks to Franklin Haws Jr, who identified the trains driver as his dad, Franklin Haws Sr. (photo courtesy Apache Plaza)