On The Western Frontier - Presidio of San Francisco (U.S. National Park Service)

Western Presidio Projects Golden Gate National Parks Conservancy

National Park Service History Electronic Library & Archive

The People Behind Our National Parks

Hotel History in San Francisco, California - Inn at the Presidio

Presidio and Yosemite National Park

Park Archives: Presidio of San Francisco

Park Archives: Historical Documents

Presidio and Yosemite National Park

A Vision for the Presidio - Presidio of San Francisco (U.S.