This primary source comes from the Records of the Patent and Trademark Office.
National Archives Identifier:
7369156Full Citation: Patent Drawing for H. R. Sweny's Golf Club; 9/12/1899; Utility Patent Drawings, 1837 - 1911; Records of the Patent and Trademark Office, Record Group 241; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/patent-drawing-for-h-r-swenys-golf-club, January 23, 2025]