Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA
Louise Morse photograph albums, Book II, Page 12
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Posing in the Morses' backyard are I.J. (Iso) Schoenberg and his second wife, Dolly (née van der Hoop). Schoenberg's first wife was also known as "Dolli," though her given name was Charlotte. She was the daughter of mathematician Edmund Landau.