This primary source comes from the Records of the Patent and Trademark Office.
National Archives Identifier:
7369161Full Citation: Patent Drawing for E. Kempshall's Golf Ball; 4/1/1902; Utility Patent Drawings, 1837 - 1911; Records of the Patent and Trademark Office, Record Group 241; National Archives Building, Washington, DC. [Online Version, https://www.docsteach.org/documents/document/patent-drawing-for-kempshalls-golf-ball, May 17, 2024]