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Libra Esoterica

Tradition 20 of 35

UFOs, extraterrestrials, and contact

UFO/UAP reports, flying saucers, extraterrestrial life, alien contact or abduction, contactees, and ancient-astronaut claims.

Membership means relevance, not endorsement.

Books
1,111
Earliest
1558
to 2026
Read free
26%
292 with public full text
With covers
55%

How books qualify

  • Query + metadata match1,034
  • Metadata match69
  • Query match7
  • Source classification (retained through merging)1

Every placement records its evidence — the controlled subject queries that found the book at its sources and the bibliographic metadata retained through merging. Each book page shows its own. How the rationale system works.

Key subjects

Top languages

  • English771 · 69%
  • German86 · 8%
  • Japanese48 · 4%
  • French31 · 3%
  • Dutch29 · 3%

Notable authors

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Books

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1,111 books

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