For more on the award, see here. Here's the newspaper story that prompts my nomination, from the S.F. Chronicle, Sept. 25, 1893, p. 3:
La Grande, September 25. -- The anti-Chinese agitation here culminated last night. An armed mob of 200 men met outside the city limits and midnight and marched to the Chinese quarter. They looted the houses, marched the Chinese to the city limits and ordered them to leave.
At a meeting held twelve miles from the city yesterday inflammatory speeches were made by an attorney named Esteb and others. The mob was organized at this meeting and was led to La Grande by H.C. Cotner, a rancher, and Joseph Truesdale, a saloon-keeper. The officials attempted to quell the riot, but were overpowered. Warrants have been issued for the arrest of the ringleaders.
About thirty of the Chinese took refuge at the residence of Chinese Missionary Trumble. His wife and daughter were alone in the house when the mob demanded the surrender of the Chinese. Mrs. Trumble appeared at the door with a rifle and announced that the first man to enter the house would be shot. The mob dispersed.
Thanks to Jean Pfaelzer's Driven Out: The Forgotten War Against Chinese Americans (2007) for the pointer (see p. 322).