Documents / Report
This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.
“R.G.”3 pages
Evaluation 0- Balloon ; 1-Astmraucal ZAneraft 3-Light Phenom. I-Biids S-Clouds. Dust, etc O l n u f l i c Into. 7-Psycno logical t-Unkmnm »-Otl«> , Total Taste 91 X 0 A?. /Z-3 / / 370 Percent Certain 0-2 3LS 0-f 0? 0B £.2. 2.2 Doubtful -JJL 3/3 V.s tf0> 0? J2JZ Xaa\ /? g 44// Total 2.2. •*A/ 9-7 a*? 0t> 3' Z r?6 A 07 0.0- 0.0 0.0 0c? .0.0 MJL Total £/ £o-7 /?•? / • 3 A0O J7u/?//r/av A?0r S7-AT&/7 Number Certain Ill sx j ) /0/ £• //0 ZZ. Doubtfu f£ 37 / / / 0 0 JS2 Total 7 / Mf Iff (01 ,r//0 SJLi Pet Cent Certain ft £4 0.2. 02 At. 3 0.Z Jtf Doubtful V-7 t.i.9 Ae-0 OZ- 02- 0.0 00 at Total ft. 6. J2.Z 07 #••¥ Ai S 0$ A7-7 /(?0. ' -f/ZSte /)2M £i/auJ/)r/0/i/ /?/: ALL S/&//r/AtC,s ^0/e /4c^ t/££. S/6#r/A/G ?£>A /%/#/ir/0A/ /!?/? S/6#7-//y6 T*J0 tf/3J£Z &0 0.0 0.0 77 O.O SZ6 0.0 70? Doubtful 00 77 00 00 0.0 PO 00 00 2? / Total 00 V$6 00 0O 7.7 00 00 /00. IA-30 Si-ce/if/rs Number Certain 0 0 0 JlL JL jr / 19 Doubtful - 0 £~ O 0 0 0 0 0 / /0 Total P 0 0 0 2- i JL 2.9 Percent Certain JLL 00 241 0.0 0.0 0.0 ££. /ii. (,&.( Doubtful Alt 0-0 //•Z 00 00 0.0 0-0 0.0 0.0 3>J.s Total 20.T 0-0 ¥/J 00 0.0 0.0 t-t 6>.f A7.Z 4, $ /oo. J7/-00 S £~00/V/?3 Number Certain 0 0 / 0 0 / P JL Doubtfu 0 3 / P 0 0 zP Total / /£ / 0 / £) J2- f Percent Certain -J2L 0.1} .11.1 0-0 0.0 0.6 0.0 0.0 Doubtful AC //•( 33,? II. 1. 0.O (Al/ P.o 0.O 0.0 fb.S Total O.O II- I M.lf II. P.O ao //•I 01 01 IP0. Evaluation 0- Balloon 1-Astronomical 2-Aircraft 3-Light P l u m s . 4-Birds S-Clouds. Dust, etc 6-lnsiHic Into. 7-P«ycno logical 1-UnknoM) MOM. Total 6/S^COMPJ -jr/rfz/vvrz-j Number Certain 7 / 7 O 0 7 / / / Doubtful 7 // 0 0 0 / 0-' p A%0 S.3 i$.f Doubtful / / $ • A%0 00 00 0.0 0.0 /i 00 00 SA.A Total 2?.o AI 00 0.0 Ad. 13 12. /to /00 6~30 A///tAisr/£-j Number Certain 6 1 / 3 P £) J2 0 p 3 Doubtful £_ ? Percent Certain /T^ HO MD 0.0 Jll O.0 /in JA Doubtful D.D JP.O D.O F.0 M 0.0 £>.O Total 5~o.O 0,0 0.0 r,0 A0.C- o.c f.0 (CAU. Number Certain 4- • / A3 • O 1 0 s 6S~ Doubtful 3 0 0 0 c0 •0 Total 7 9 /7 & / 7 2-tf y Percent Certain f.Z t i JLL A3 00 ?•/ a.0\ A..? Doubtful .r.r S7JL 00 00 at? <?•? 0.0 0.0 Pi A^i Total f. / /'• 7 A3 O.0 ? A 0.0 9./ /00. i 232
Report, cited by the archive. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.