The property just west of the main house was part of the Stillman Ranch and home of the Paradise and Pacific Railroad.

In 1947, the McCormicks established an Indian Arts and Crafts center on Pima Road near Shea Blvd. The center consisted of 7 hogans built from materials transported from the Hopi Reservation. Two of the three hogans were later relocated to the park. The third is now located at the Heard Museum.