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  1. By: Smith, Hobart M. (Hobart Muir), - Rüthling, Paul D. R. - Rüthling Mexican Expedition
    Publication info: New York City, The American Museum of Natural History, [1936]
    Holding Institution: American Museum of Natural History Library
  2. By: Rüthling Mexican Expedition (1919-1920) - Rüthling, Paul D. R. - Smith, Hobart M. (Hobart Muir),
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library