Wallenberg visited him at his home on 5 July , the evening before he left for Budapest .
Ehrenpreis was also involved in planning the attempt by Raoul Wallenberg to rescue Hungarian Jews .
Raoul Wallenberg visited Ehrenpreis at Ehrenpreis ' home on 5 July , the evening before he left for Budapest .
Ehrenpreis was also involved in planning the attempt by Raoul Wallenberg to rescue Hungarian Jews .