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  1. By: Norton, R A - Welbourn, W. Calvin - Cave, Ronald D.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 90
    Date: 1988
    Page Range: 407--410
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: Welbourn, W. Calvin - Young, Orrey P
    Type: Article
    In: The Journal of arachnology
    Volume: 16
    Issue: 3
    Date: 1988
    Page Range: 373--385
    Publication Info: [Lubbock, Tex.], American Arachnological Society,
  3. By: Welbourn, W. Calvin - Loomis, Ronald B
    Type: Article
    In: Bulletin of the Southern California Academy of Sciences
    Volume: 69
    Date: 1970
    Page Range: 65--73
    Publication Info: Los Angeles, Calif, The Academy, 1902-1971