This primary source comes from the Records of District Courts of the United States.
Full Citation: Declaration of Intention for Gertrud Danneberg; 1/14/1931; Petitions for Naturalization, 1824 - 1991; Records of District Courts of the United States, Record Group 21; National Archives at New York, New York, NY. [Online Version, https://docsteach.org/documents/document/declaration-of-intention-for-gertrud-danneberg, March 23, 2025]