It's said that Dr. Zilboorg, when he first arrived in the United States, spoke only Russian and French, but he secluded himself in his room for three months during which he learned impeccable English. Zilboorg was a prominent psychoanalyst in NYC. He apparently collected art and played chess. He is listed on the brochure as one of the players in the blindfold demonstration, though he was replaced. He contribution to the Imagery of Chess show was the prototype Bauhaus chess set from 1924 built by Josef Hartwig.