:* http://ento.psu.edu/extension/factsheets/pennsylvania-wood-cockroaches

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  • Drawing of dorsal view of an adult male P. pensylvanica, from 1918 Illinois Natural History Survey Bulletin.
  • Drawing of dorsal view of an adult female P. pensylvanica (Plate VI, figure 3), as well as views of body parts of the species, and drawings of other species. From 1917 Memoirs of the American Entomological Society, with keys to P. pensylvanica figures on pages 278–280.
  • Photographs of preserved specimens of P. pensylvanica from the Biodiversity Institute of Ontario at the University of Guelph, published under a Creative Commons license.
  • Black and white photograph of top view of P. pensylvanica female with ootheca from Smithsonian Miscellaneous Collections.