La Grange, Henry-Louis de, b. 1924Alternative names
Baroness Emily de la Grange was Henry-Louis's mother. Susie Danziger of New York City was assisting La Grange in his research and wrote an inquiry to Isolde Klarmann.
From the description of Correspondence to Alma Mahler and Adolf Klarmann, ca. 1954-1979. (University of Pennsylvania Library). WorldCat record id: 155863749