. . "Dr. Abraham Silberschein Archive: Correspondence with Marie Lewinsky, the Organization Rehabilitation Trade (ORT) representative in Switzerland regarding sending help to Josef Jaszunski, ORT Chairman in Warsaw and to the refugee camps in Switzerland"@eng . "Dr. Abraham Silberschein Archive: Correspondence with Marie Lewinsky, the Organization Rehabilitation Trade (ORT) representative in Switzerland regarding sending help to Josef Jaszunski, ORT Chairman in Warsaw and to the refugee camps in Switzerland"@eng . .