This primary source comes from the Records of the Office of the Secretary of the Interior.
National Archives Identifier:
5743050Full Citation: Executive Commission for Thomas C. Theaker of Ohio to be Examiner in Chief in the U.S. Patent Office; 3/28/1861; Records of the Office of the Secretary of the Interior, Record Group 48. [Online Version, https://www.docsteach.org/documents/document/executive-commission-for-thomas-c-theaker-of-ohio-to-be-examiner-in-chief-in-the-us-patent-office, April 26, 2024]