“SUBJECT: Reporting of Information 
on Unconventional Aircraft”
on Unconventional Aircraft”
by C. P. Cabell, Major General, 
USAF Director of Intelligence,
USAF Director of Intelligence,
Office of Deputy Chief of Staff, Operations
12 January 1950
(United States 
Air Force, Washington , D.C. 
12 January 1950
(
(Project Blue Book Archive)
The letter by Major General Charles P. Cabell was sent to the following persons: Commanding Generals, Major Air Commands, Z. I. and Overseas; All United States Air Attaches:
http://www.bluebookarchive.org/page.aspx?PageCode=NARA-PBB89-381
The letter by Major General Charles P. Cabell was sent to the following persons: Commanding Generals, Major Air Commands, Z. I. and Overseas; All United States Air Attaches:
http://www.bluebookarchive.org/page.aspx?PageCode=NARA-PBB89-381
Quote from the document:
“2. In  the future any
information obtained on this subject should be accorded the same consideration as
that given to intelligence information on other subjects.
BY COMMAND OF THE CHIEF OF STAFF: C. P. Cabell (sig)”
Cabell later became a full general.
BY COMMAND OF THE CHIEF OF STAFF: C. P. Cabell (sig)”
Cabell later became a full general.