The Janet A. Ginsburg Chicago Tribune Collection

Humble earthworm

Diagram shows the depth at which Cicada nymphs are found after 17 years compared to earthworms and prairie dog burrows.


1934-10-14

24.5 x 7 cm

Tribune Company

grayscale

  • English

  • still image
  • text

  • These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.

  • The Janet A. Ginsburg Chicago Tribune Image Collection

  • Chicago Sunday Tribune (October 14, 1934), n.p.

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