This primary source comes from the Records of the Patent and Trademark Office.
National Archives Identifier:
2524934Full Citation: 6469 - Manner of Buoying Vessels - Abraham Lincoln; 5/22/1849; Records of the Patent and Trademark Office, Record Group 241. [Online Version, https://docsteach.org/documents/document/6469-manner-of-buoying-vessels-abraham-lincoln, March 29, 2024]