1958.05 - 8841897 - 2 Mi E Of Mount Prospect, Ill

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i" PROJECT 10073 RECORD CARD 2. LOCATION 12. CONCLUSIONS O Was Balloon f hiei.) MW e . We () ® e = ) ‘= Pl Probably Balloon ; Possiodly Balloon 3. DATE-TIME GROUP 4 TYPE OF OBSERVATION Was Aircraft Vi sual RGround- O Ground-Rador Probably Aircraft Possibly Aircraft 0 Air Visual O Air-Intercept Radar 5 PHOTOS » SOURCE Was Astronomical O Yes Probably Astronomical Possibly Astronomical Oo Civilian LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE OxsOtherLllusion O Insufficient Data for...