This primary source comes from the Records of the Immigration and Naturalization Service.
Full Citation: Letter to James J. Davis, Department of Labor, from Portugese Citizens of California Regarding the Immigration Act of 1924; 11/25/1925; 55374/751; Pro- and Con- Public Opinion Re: Quotas and Other Proposed Restrictive Immigration Laws, 1924 - 1928; Subject and Policy Files, 1893 - 1957; Records of the Immigration and Naturalization Service, Record Group 85; National Archives Building, Washington, D.C.. [Online Version, https://www.docsteach.org/documents/document/letter-immigration-act-1924, April 18, 2024]