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  1. By: Heward, Robert
    Type: Correspondence
    In: Asa Gray correspondence. Senders He-Hi
    Date: 1849-01-25
    Publication Info: [1846-1891]
  2. By: Heward, Robert
    Type: Correspondence
    In: Asa Gray correspondence. Senders He-Hi
    Date: 1849-06-19
    Publication Info: [1846-1891]