Vanguard 3 being installed on the VAnguard SLV-7 launch vehicle by NASA engineer R.J. Andryshak (left) and D.R.Corbin. (NASA)
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Vanguard 3 being installed on the VAnguard SLV-7 launch vehicle by NASA engineer R.J. Andryshak (left) and D.R.Corbin. (NASA)