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.
“Midwest”5 pages
m Evaluation O-Balloon 1-Astmroaical 2-Airaaft 3-Lijht Pnenon. 4-Birds 5-Clouds, Dust, etc 6-lrmiflit h b . 7-PjrrtokJiical t - U n k n n Total Evaluation O-Balloon 1-Astnnoaical 2-Airaaft 3-Lijtit Ptiaxw. 4-Birds 5-Clouds, Dust, etc 6-lnsuflic Info. 7-Psydnki(ical 8-Unkmm Miner Total Evaluation O-Balloon 1-Astranomical 2-Airaaft 3-Lijbt P h o o o . 4-Birds 5-Clouds, Oust, e t c S-lnsuffic Into. 7-Psyanlojical D-Unknomn Wither Total J* A/ !//>£ 0 $ ? 0 3 0 Certain o.o 0.0 6.0 5.3. lo.6 S.I lid. 3 erCent Doubtful o.d 0.0 P.o 6.0 0.6 0.6 00 O.o Ji-3 Total 00 yo.5 0.0 0 . 0 0.0 5-3 0 . 0 513 I to. PerCent Certain Jff.t /O.d d.6 dd /a.d AA O.d •EH 6 Certain 3.0 3%Z d.6 At 0.6 13 1 0.6 731 O.L m.o Doubtfu 63 Sd.0 fid 0.6 d* 6.0 d.d /5.i PerCent Doubtfu 6.0 d.d 6.0 d.O OA d.O d-0 Ad 0J> d.0 O.d Total tf-0 d.O 0.6 dd d.6 /d.6 d.d Vi.6 /so /dd. Total d.O ISM a.o 0.6 d.D i3 1 o.o 13. / 0.0 Fa/5 Nutnbet Certain 3 i. 0 0 6 3 __^ Doubtful 0 H 6 0 o o o a o 0 Total 3 7 e> 0 0 II 0 3 3 3.1 Certain 7 1 4.1 12.). O.t) 0.0 0.0 HI o.o Id _M J e r C w t Doubtful O.b a.\ o.b 6d O.b Oh OA db —Ah * • * a.\ Total i l l m.i O.b o.b 6.0 3?3 O.b ZA l\.t> 0.0 lao.o Doubtful ot> 6.6 d-0 0.1 0.D 0.0 O.i 0.0 a.o — Tot * us 2o.1 d-6 At O.b y].i> Ob Ib6. PerCent Certain yd HA dd o.d SJ a.d 7Z-6 Doubtful ad 31/. d Yd a.o 06 od- d.d 44 d.6 d.d 3-1.6 Number Certain } /6 d d d / 3 2 1 •2-0 Doubtfu 4 7 d d d_ 0 0 d d 0 1 / Total 0 0 0 i 3 a. j 3J Certain 3.X 0 6 0,6 6.6 3.2 9.7 £>.5 3.1 PerCent Doubtful JiL3 Total £.4 36. d e.d 6& d-d 2.0 fl.O V* /to. Total ULA -AA -AA oA O.D 0 0 LJ5 J5.5 3.1 o.o o.t> o.o 3-A 1.1 ^5 3.2 HO. i 113
Report, cited by the archive. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.