CASE FILE · DD-15
Projects Sign, Grudge and Blue Book with the Condon Report
Period · 1947–1969Place · United States Air Force
01 · OVERVIEW
Case overview
Traces the Air Force investigation lineage, 12,618 Blue Book reports and the Condon Report used in the decision to end the program in 1969.
Project Blue Book staff in 1963, with Major Hector Quintanilla seated at center, documenting the program's operation.
U.S. Air Force · public domain ↗03 · IMAGE CONTEXT
Image analysis
This U.S. Air Force photograph records Project Blue Book personnel and leadership in 1963. It confirms the institutional existence of the program but cannot validate conclusions or investigative quality in individual cases. It is useful for understanding the program's scale and working environment.04 · EVIDENCE REVIEW
Nature of the evidence
Program records, 701 of 12,618 reports left unidentified, and termination in 1969
Meaning of the unidentified category and whether the closure conclusion reflected the full record
Government recordMilitary · institutional
05 · SOURCE TRAIL