It is unusual , structurally , due to reports from the 1906 San Francisco earthquake about which types of buildings survived earthquake and fire . Ergo it is built from steel and concrete on the first two floors , although from there up has timber framing with two-foot thick brick masonry exterior walls . A March 1906 newspaper report had stated the building was expected to be built from brick masonry ; a May 1906 newspaper report said its construction would change
1906 San Francisco earthquake
1906 San Francisco earthquake
Elks Building (Stockton, California)