California's Cushing connection: Harvey Cushing trained California's first neurosurgeons.

On September 9, 2000, California celebrated its sesquicentennial anniversary of its admission to the United States. One hundred years ago, in September of 1901, Harvey Cushing began his surgical practice in Baltimore, Maryland. The proximity of these dates presents an auspicious moment for a review of the careers of three neurosurgeons trained by Dr. Cushing--Howard Naffziger, Carl Rand, and Edward Towne--who played defining roles in establishing modern neurosurgery in the Golden State. In promulgating Cushing's surgical principles and philosophy, these physicians achieved a distinguished place in the history of medicine in California.