Jacob | John Jacob Astor | Jacob M. Appel | Jacob Epstein | Carl Levin | Jacob Zuma | Jacob Obrecht | Jacob Lawrence | Jacob Appel | Tony Levin | John Jacob Astor IV | Irène Jacob | Mark Levin | Jacob Jordaens | Paul Jacob | Levin | Robert D. Levin | Meshullam ben Jacob | Jacob Riis | Jacob Grimm | Jacob Christian Schäffer | Jacob Appelbaum | Robert Levin | Levin, New Zealand | Jacob Truedson Demitz | Jacob ter Veldhuis | Jacob's Ladder | Jacob's biscuits | Jacob's Award | Jacob Rothschild |
He tied for fourth/fifth at New York 1940 (US Chess Championship, Samuel Reshevsky won), tied for third/fourth at Ventnor City 1941 (Jacob Levin won), tied for third at New York 1942 (US championship, Reshevsky won), shared third at Ventnor City 1942 (Daniel Yanofsky won), took fifth place at New York 1944 (US championship, Arnold Denker won), and tied for second/third at Ventnor City 1944 (Levin won).