| JIMMY, HENCAN (USA) | Untitled: Hybrid ca. 1950 | JimH1950hybr |
| JOHNSON, THOMAS GEORGE (USA 1844-1904) | Bust Portrait of Walt Whitman after Cox ca. 1890 | JohT1890walt |
| JOHNSTON, YNEZ (USA b. 1920) | Improbable Vehicle 2000 | JohY2000vehi |
| JUDGES (England f. 1902) | Royal Exchange & Bank of England ca. 1925 | Judg1925bank |