Joe Nickell's book includes case studies of 19th-century "spirit photos," such as those created by William Mumler, and demonstrates that these images were produced through optical illusions or fraud rather than supernatural phenomena.

Authors

• Person: Not available Organization: Grokipedia
  Joe Nickell - Grokipedia

Sources

• Joe Nickell - Grokipedia grokipedia.com Grokipedia via serper

Referenced by nodes (1)

• Joe Nickell entity