2007 Tushar Ghosh (in name of Frederick T. Pierce)
2006 Ronald Postle (in name of Stanley Backer)
2005 You-Lo Hsieh (in name of Giuliana Tesoro)
2005 James Economy (in names of Ludwig Rebenfeld and Herman F. Mark)
2004 Richard Gregory (in name of Ludwig Rebenfeld)
2003 John Hearle (in name of Stanley Backer)
2003 Menachem Lewin (in name of Ernst Kaswell)