This primary source comes from the Records of the Office of the Secretary of the Interior.
National Archives Identifier:
5743045Full Citation: Executive Commission for Joseph J. Coombs of the District of Columbia to be Examiner in Chief in the U.S. Patent Office; 8/6/1861; Records of the Office of the Secretary of the Interior, Record Group 48. [Online Version, https://www.docsteach.org/documents/document/executive-commission-for-joseph-j-coombs-of-the-district-of-columbia-to-be-examiner-in-chief-in-the-us-patent-office, March 29, 2024]