Project Blue Book remains the foundational public record of the U.S. government’s historical encounter with the UAP phenomenon.
Project Blue Book Index:
Was Project Blue Book a genuine scientific inquiry or a decades-long campaign of disinformation? The Project Blue Book Index catalogs the thousands of sightings analyzed by the U.S. Air Force, separating the “Identified” from the truly anomalous. From the leadership of Captain Edward Ruppelt in Project Blue Book, A History to the controversial transition from PROJECT GRUDGE/BLUE BOOK, this archive tracks the evolution of military skepticism.
Explore the most baffling cases in The Bluebook: Unknowns, featuring sightings that defied conventional explanation even by the Air Force’s own standards. Whether you are looking for the Project Bluebook summary or investigating the mysterious A Missing Pentacle case, this index provides the documentation necessary to understand the legacy of the most famous government UFO study in history.
Executive Summary
The Project Blue Book Index functions as the “Historical Registry” for the Think Aboutit platform. Its objective is to provide a structured look at the 12,618 sightings reported to the program and the 701 that remain officially “Unidentified.” By categorizing entries into Program Histories, Case File Summaries, and The Unknowns, we allow researchers to see how the Air Force systematically categorized the phenomenon.
This archive is essential for the 2026 transparency era, as modern UAP investigations often mirror the methodologies—and the pitfalls—of Project Bluebook. It connects the early investigative rigor of Project Blue Book, A History with the final conclusions that led to the program’s termination following the Condon Committee report. This is the definitive collection for anyone studying the roots of official UAP documentation.
“When the history of the UFO is written, Project Blue Book will be seen as the most successful effort to explain away the inexplicable while simultaneously documenting the impossible.”
Dr. J. Allen Hynek, Former Scientific Consultant to Project Blue Book
