1957.03 - 6786927 - 10 Mi NE of Blaisdell, N.D

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Me PROJECT 10073 RECORD CARD 1. DATE os 2. LOCATION —_ 3 CONCLUSIONS goa Was Balloon March 1957 10 Mi NE of Blaisdell, N.D. Probably Balloon 3. DATE-TIME GROUP | 4. TYPE OF OBSERVATION Possi bly Balloon NE ee & Ground. Vi sual Wos Aircraft ano BD Ground-Radar Probably Aircraft GAT... Not eiven: 0 Ai Vi sua r Possibly Aircraft l DO Air-Intercept Radar 5. PHOTOS i - | 6- SOURCE Was Astronomical oof ie 0 Yes e Probably Astronomical EiNo Civilian Paasibly Astronomical 7. LENGTH OF OBSERVATION 8....