NOTE: Jack Yuen's case was reported in newspapers.

San Francisco Chronicle January 17, 1886
One of Withers' Proteges
Among the passengers on the steamship Gaelic, which arrived on Friday from China, is Jack Yuen, who presents a passport issued by the Chinese Consulate in this city, indorsed by the United States Consul at Hongkong, R. E. Withers. The letter approved the certificate on receiving a letter from the Chinese Consul-General and Consul Bee, in which they asked that Jack Yuen might be lawfully landed in this city.

Daily Alta California, Volume 40, Number 13092, 17 January 1886
Jack Yuen’s certificate