Skip to content
Libra Esoterica

Tradition 20 of 33

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
1,014
Earliest
1687
to 2026
Read free
20%
201 with public full text
With covers
56%

How books qualify

  • Query + metadata match938
  • Metadata match68
  • 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

  • English752 · 74%
  • German80 · 8%
  • Japanese48 · 5%
  • Dutch29 · 3%
  • Italian21 · 2%

Notable authors

All authors

Books

Open in Browse with these filters

1,014 books

Era