How to Use
the Maps

Table of
Contents

1. Ontario, California, once the home of Serrano and Gabrieleno Indians (Tungva nation) is bordered on the north by the San Gabriel Mountains and on the south, west, and the east by desert. After you locate Ontario, use small triangles to draw in the San Gabriel Mountains and label the mountains.

2. Spanish explorers in the 18th century and American explorers in the 19th century visited the site that later became Ontario, California. It was not until 1872, when the Southern Pacific Railroad passed through the area, that people began to consider settling there. Why do you think this was so?