This primary source comes from the Records of the Immigration and Naturalization Service.
Full Citation: Bureau Circular Number 10: Duty of Employees of the Immigration Service to Enforce Both the Immigration and the Chinese Exclusion Laws; 1/3/1905; 14806/8; Chinese General Correspondence, 1898 - ca. 1911; Records of the Immigration and Naturalization Service, Record Group 85; National Archives at Washington, D.C.. [Online Version, https://www.docsteach.org/documents/document/bureau-circular-number-10-duty-employees-immigration-service-enforce-immigration-chinese-exclusion-laws, May 15, 2024]