1957.09 - 7228561 - Philadelphia, Pennsylvania

Document Text (OCR)

4 7 PROJECT 10073 RECORD CARD a 1. DATE : 2. LOCATION 12. CONCLUSIONS 4 0 Was Balloon a 9-10 September 1957 Philadelphia, Pennsylvania o Hida A a 3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Ce Ser ia r O Was Aircraft Local & Sround- Vi sual 0 Ground-Rodar a Probobl y Aircraft GM O Air Visuol O Air-Intercept Radar O Possibly Aircroft 5. PHOTOS O Was Astronomico! O Yes ice O Probably Astronomical A-No A he rere Civilian OD Possibly Astronomical ? - — 3 + 7. LENGTH OF.OBSERVATION 8. NUMBER OF...