This primary source comes from the Records of the Immigration and Naturalization Service.
Full Citation: Chinese Government Certificate of Return for Mah Chung; 9/27/1892; No. 1860; Chinese General Correspondence, 1898 - ca. 1911; Records of the Immigration and Naturalization Service, Record Group 85; National Archives Building, Washington, DC. [Online Version, https://www.docsteach.org/documents/document/mah-chung-certificate, April 17, 2025]