In 1846, Thomas Larkin, American council general to the Mexican government in California, purchased a Mexican land grant, Las Mariposas, for Col. John C. Fremont. The grant consisted of 10 square leagues of grazing land located near the Merced River and west of the Sierra. In 1848, when California became the possession of the United States, the treaty called for the recognition of preexisting grants. Gold was discovered in the foothills of the Sierra that same year. Fremont floated his questionable Mexican grant into the gold discovery region. With the formation of the State of California in 1850, one of the original counties was named Mariposa, Spanish for "butterflies." Located within the county was the Fremont grant and much of the yet undiscovered Yosemite region of the Sierra. Encounters with Native Americans near the mining camps lead to the formation of the Mariposa Battalion, and a search for the natives led to the American discovery of Yosemite Valley. Thus, it was custodians and photographers such as Charles Leander Weed, Carlton E Watkins, J.J. Riley, George Fiske, Ansel Adams, and many others that interpreted and introduced Yosemite to the world.

In 1878, Charles Erskine Scott Wood, builder of the Cats Estate, wrote Good citizens are the riches of a city. From its beginning, Los Gatos has suffered no shortage of hardworking, inventive, entrepreneurial, and gifted people. Early orchardists found the land unbelievably productive, but their crops were threatened with disease and pesky infestations of gophers. John Bean and Zephyr Macabee provided solutions. Louise Van Meter was an unconventional teacher who championed the new concept of kindergarten. Neta Snook Southern defied traditional female roles to become a pilot. She taught Amelia Earhart to fly before retiring to Los Gatos, where she raised prunes, apricots, and miniature horses. John Steinbeck wrote The Grapes of Wrath during one long, hot summer in town. Steve Wozniak settled in Los Gatos and donated computers to schools. The lives presented here have contributed to the sparkling legacy of the Gem City of the Foothills.