File:Brooks Hall SF opening 1958-04-11.jpg

Grand opening of Brooks Hall, San Francisco's first modern convention center, on April 11, 1958. It would later host the first Macworld Conference & Expo in February 1985.

Source

 * SF’s Brooks Hall: Mayor made a mountain out of Mole Hall moniker by Bill Van Niekerken, San Francisco Chronicle. 2018-01-30.