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MLA
Duyckinick, Evert A. (Contributor). Portrait of Humboldt, Friederich Heinrich Alexander von (Baron von) (1769-1859) - University of Texas Libraries Collections. 1873. https://collections.lib.utexas.edu/catalog/utlmisc:cf4a49a7-dc3d-49fd-89ce-c1d630ad67e6APA
Duyckinick, Evert A. (Contributor). (1873). Portrait of Humboldt, Friederich Heinrich Alexander von (Baron von) (1769-1859). Retrieved June 14, 2026, from https://collections.lib.utexas.edu/catalog/utlmisc:cf4a49a7-dc3d-49fd-89ce-c1d630ad67e6Chicago
Duyckinick, Evert A. (Contributor). Portrait of Humboldt, Friederich Heinrich Alexander von (Baron von) (1769-1859). 1873. "Portrait of Humboldt, Friederich Heinrich Alexander von (Baron von) (1769-1859) – Collections". University of Texas Libraries Collections. <https://collections.lib.utexas.edu/catalog/utlmisc:cf4a49a7-dc3d-49fd-89ce-c1d630ad67e6> (14-June-2026).Note that these citations have been automatically generated, please verify that citation is correct and contains all necessary information.