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»My dear Heinzchen! How are you? Did you have a good trip? Mummy misses you very much. Lots of love from your dear Mummy. Dear nurse of my dear Heinz! If you have time, please write to me and tell me how Heinz is doing. Does he sleep well at night? How is his appetite, and where do you keep him during the day, in his high chair or in his crib? Please ease the heart of an unhappy mother. With gratitude, Mrs. E. Schäfer.«