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  1. By: Koelz, Walter, - Marien, Daniel, ornithologist.
    Publication info: 1951
    Holding Institution: American Museum of Natural History Library
  2. By: Koelz, Walter, - Marien, Daniel, ornithologist.
    Publication info: 1951
    Holding Institution: American Museum of Natural History Library
  3. By: Koopman, Karl F. - Marien, Daniel, ornithologist.
    Publication info: 1955
    Holding Institution: American Museum of Natural History Library
  4. By: Koelz, Walter, - Marien, Daniel, ornithologist.
    Publication info: 1952
    Holding Institution: American Museum of Natural History Library