San Francisco: Self-published, 1994. Spiral_bound. 57p., 7.5x7 inches oblong, 57 photos in b&w, very good in original spiral-bound pictorial wraps. Blaisdell has pulled together many such compilations and she is good at it.
Photos from the 1894 California Midwinter International Exposition, the 1915 Panama Pacific International Exposition and the 1939-40 Golden Gate International Exposition.