Sioux City, Iowa, January 1951

Document Text (OCR)

PROJECT 10073 RECORD CARD ( 1. DATE 2. LOCATION ; , 12. CONCLUSIONS 1 ‘ a Wos Bolloon 20 Jan 5] | Sioux City, Iowa oO Probably Balloon Possibly Balloon 3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Bolg 0 Local __ . O Ground- Vi sual O Ground-Rodar oz Probably Aircrof? Wes Aircraft omt__Not reported & Air-Vi suai D Air-Intercept Radar 0 Possibly Aircraft :* eee y =| Reels gitceoc ae: ce | ae Was Astronomical O Yes Airline Pilots Q Probobly Astronomical ‘Possibly Astronomical & No Multiple Tower...